55 (fifty-five) is the natural number following 54 and preceding 56. In mathematics, a natural number can mean either an element of the set {1, 2, 3, ...} (i. ... 54 (fifty-four) is the natural number following 53 and preceding 55. ... 56 (fifty-six) is the natural number following 55 and preceding 57. ...

← 50 51 52 53 54 55 56 57 58 59 → 49 (forty-nine) is the natural number following 48 and preceding 50. ... 50 (fifty) is the number following 49 and preceding 51. ... 51 (fifty-one) is the natural number 51 following 50 and preceding 52. ... 52 (fifty-two) is the natural number following 51 and preceding 53. ... 53 (fifty-three) is the natural number following 52 and preceding 54. ... 54 (fifty-four) is the natural number following 53 and preceding 55. ... 56 (fifty-six) is the natural number following 55 and preceding 57. ... 57 (fifty-seven) is the natural number following 56 and preceding 58. ... 58 is the natural number following 57 and preceding 59. ... 59 (fifty-nine) is the natural number following 58 and preceding 60. ... 60 (sixty) is the natural number following 59 and preceding 61. ... List of numbers — Integers This is a list of articles about numbers (not about numerals). ... Not to be confused with Natural number. ... 0 10 20 30 40 50 60 70 80 90 → Zero redirects here. ... This article is about the number 10. ... 20 (twenty) is the natural number following 19 and preceding 21. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 40 (forty) is the natural number following 39 and preceding 41. ... 50 (fifty) is the number following 49 and preceding 51. ... 60 (sixty) is the natural number following 59 and preceding 61. ... Look up seventy in Wiktionary, the free dictionary. ... 80 (eighty) is the natural number following 79 and preceding 81. ... 90 (ninety) is the natural number preceded by 89 and followed by 91. ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ...
Cardinal	55 fifty-five
Ordinal	55th fifty-fifth
Factorization
Divisors	1, 5, 11, 55
Roman numeral	LV
Binary	110111
Hexadecimal	37

Aleph-0, the smallest infinite cardinal In mathematics, cardinal numbers, or cardinals for short, are a generalized kind of number used to denote the size of a set, known as its cardinality. ... In set theory, ordinal, ordinal number, and transfinite ordinal number refer to a type of number introduced by Georg Cantor in 1897, to accommodate infinite sequences and to classify sets with certain kinds of order structures on them. ... ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... The system of Roman numerals is a numeral system originating in ancient Rome, and was adapted from Etruscan numerals. ... The binary numeral system, or base-2 number system, is a numeral system that represents numeric values using two symbols, usually 0 and 1. ... In mathematics and computer science, hexadecimal, base-16, or simply hex, is a numeral system with a radix, or base, of 16, usually written using the symbols 0–9 and A–F, or a–f. ...

In mathematics

Fifty-five is a heptagonal number, a centered nonagonal number, and a triangular number (the sum of the numbers 1 to 10) and a square pyramidal number (the sum of the squares of the integers 1 to 5). It is also a Fibonacci number (the largest Fibonacci number to also be a triangular number) and a Kaprekar number. The number 55, like 89, displays an interesting property of the Fibonacci Sequence. A heptagonal number is a figurate number that represents a heptagon. ... A centered nonagonal number is a centered figurate number that represents a nonagon with a dot in the center and all other dots surrounding the center dot in successive nonagonal layers. ... A triangular number is the sum of the n natural numbers from 1 to n. ... A pyramidal number, or square pyramidal number, is a figurate number that represents a pyramid with a base and four sides. ... In algebra, the square of a number is that number multiplied by itself. ... Not to be confused with Natural number. ... A tiling with squares whose sides are successive Fibonacci numbers in length A Fibonacci spiral, created by drawing arcs connecting the opposite corners of squares in the Fibonacci tiling shown above – see golden spiral In mathematics, the Fibonacci numbers form a sequence defined by the following recurrence relation: That is... In mathematics, a Kaprekar number is a number that, in a given base, when squared, can be split into two numbers with the same number of digits as the original number which add up to the original number again. ... 89 (eighty-nine) is the natural number following 88 and preceding 90. ...

55 is a semiprime, being the product of 5 and 11 and it is the 2nd member of the (5.q) semiprime family. 55 is one of only two integers with an aliquot sum of 17 (the other being 39). 55 has an aliquot sequence of 4 members: (55, 17, 1, 0). In mathematics, a semiprime (also called biprime or 2-almost prime, or pq number) is a natural number that is the product of two (not necessarily distinct) prime numbers. ... Look up five in Wiktionary, the free dictionary. ... 11 (eleven) is the natural number following 10 and preceding 12. ... Divisor function σ0(n) up to n=250 Sigma function σ1(n) up to n=250 Sum of the squares of divisors, σ2(n), up to n=250 Sum of cubes of divisors, σ3(n) up to n=250 In mathematics, and specifically in number theory, a divisor function is... 17 (seventeen) is the natural number following 16 and preceding 18. ... 39 (thirty-nine) is the natural number following 38 and preceding 40. ... In mathematics, an aliquot sequence is a recursive sequence which can be defined in the following way: if we write σ(n) = σ1(n) to be the divisor function normally, then, the aliquot sequence of k can be written: s0 = k sn = σ(sn−1) − sn−1 For example, the aliquot sequence... For other uses, see number 17. ...

In science

• The atomic number of caesium.

See also: List of elements by atomic number In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom. ... General Name, Symbol, Number caesium, Cs, 55 Chemical series alkali metals Group, Period, Block 1, 6, s Appearance silvery gold Standard atomic weight 132. ...

Astronomy

• Messier object M55, a magnitude 7.0 globular cluster in the constellation Sagittarius
• The New General Catalogue object NGC 55, a magnitude 7.9 barred spiral galaxy in the constellation Sculptor
• The Saros number of the solar eclipse series which began on -1255 July 6 and ended on 43 August 23. The duration of Saros series 55 was 1298.1 years, and it contained 73 solar eclipses. The Saros number of the lunar eclipse series which began on -935 April 25 and ended on 345 June 1. The duration of Saros series 55 was 1280.1 years, and it contained 72 lunar eclipses.

The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ... Globular Cluster M55 (also known as Messier Object 55, Messier 55, M55, or NGC 6809) is a globular cluster in the Sagittarius constellation. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... The Globular Cluster M80 in the constellation Scorpius is located about 28,000 light years from the Sun and contains hundreds of thousands of stars. ... This article is about the star grouping. ... For other uses, see Sagittarius. ... The New General Catalogue (NGC) is the best-known catalogue of deep sky objects in amateur astronomy. ... Categories: Astronomy stubs | NGC objects | Sculptor group | Barred spiral galaxies ... NGC 1300, viewed nearly face-on. ... Categories: Astronomy stubs | Modern constellations | Constellations | Sculptor constellation ... A Saros cycle is a period of 6585 + 1/3 days (approximately 18 years 10 days and 8 hours) which can be used to predict eclipses of the sun and the moon. ... Photo taken during the 1999 eclipse. ... is the 187th day of the year (188th in leap years) in the Gregorian calendar. ... Events Aulus Plautius, with 4 legions, landed on Britain. ... {| style=float:right; |- | |- | |} is the 235th day of the year (236th in leap years) in the Gregorian calendar. ... Time lapse movie of the 3 March 2007 lunar eclipse A lunar eclipse occurs whenever the Moon passes through some portion of the Earth’s shadow. ... is the 115th day of the year (116th in leap years) in the Gregorian calendar. ... // Events James was happy for once hehe what Births John Chrysostom, Christian bishop and preacher Deaths Pachomius, early monasticist (approximate date) Bishop Nicholas of Myra, Roman priest (or 352). ... is the 152nd day of the year (153rd in leap years) in the Gregorian calendar. ...

In music

• A song produced by Group X was called "Schfifty Five". With the addition of a flash animation, "Schfifty Five" became a common internet meme
• The name of a song by British Indie Rock Band Kasabian. The song was released as a B side to Club Foot and was recorded live when the band performed at London's Brixton Academy.
• Sammy Hagar sang "I Can't Drive 55"
• Tom Waits (and later Sarah McLachlan) sang "Ol' 55"
• Cristian Vogel released an album in 2005 with the title "Station 55"

Gröûp X, most commonly known without the gratuitous accenture, and also as Gröûp X: Arabian Rap Sensations, is a mix rap/rock group from Georgia, in the United States. ... For other uses, see Meme (disambiguation). ... For other uses, see Kasabian (disambiguation). ... Samuel Roy Hagar (born October 13, 1947 in Monterey, California, USA), better known as Sammy Hagar (aka The Red Rocker), is an American rock guitarist, singer, and composer. ... Thomas Alan Waits (born December 7, 1949) is an American singer-songwriter, composer, and actor. ... Sarah Ann McLachlan, OC,[2] OBC[2] (born January 28, 1968) is a Grammy-winning Canadian musician, singer and songwriter. ...

In other fields

55 US gallon drum

Fifty-five is: Image File history File links 44 gallon drum (imperial measure) also known as a 55 gallon drum (U.S. measure). ... Image File history File links 44 gallon drum (imperial measure) also known as a 55 gallon drum (U.S. measure). ... A typical drum A 44 gallon drum (known as a 55 gallon drum in the United States) is a cylindrical metal container (drum) with a nominal capacity of 44 imperial gallons, 55 U.S. gallons or 205 litre. ...

• The number of delegates who attended the United States Constitutional Convention in 1787
• In US gallons, a common size of drum containing liquids; see 55 US gallon drum
• In miles per hour,
  • the highest speed limit allowed in the United States between 1974 and 1986 per the National Maximum Speed Law
  • In many states of the United States, a very common speed limit for rural secondary roads and many urban freeways.
• In years of marriage, the emerald wedding anniversary
• The code for international direct dial phone calls to Brazil
• The number of European route E55 from Helsingborg, Sweden to Greece
• The designation of I-55, a freeway that runs from Louisiana to Illinois
• Restaurant slang for root beer
• The number of Sacha Baron Cohen's character, Jean Girard, in the 2006 film Talladega Nights: The Ballad of Ricky Bobby. In real life, however, it is the number of Michael Waltrip
• In 1973, Spiro Agnew, resigned the Vice Presidency at age 55
• In sports, the jersey number, "55" ,is also know as "Double Nickels" or "Double Nicks".
• In the dice game, craps, if you roll two 5's or a "55" this is commonly known as a hard 10 or double nickels.
• Pablo Picasso completed his "Guernica" in 1937, at age 55

• Pro Blend 55 Mocha Capuccino mix

• 55 Days at Peking starred Charlton Heston and David Niven
• Britvic 55 , A soft drinks brand in the UK
• There are 55 languages recorded on the Voyager Golden Record
• Adolf Hitler was the fifty-fifth member of the National Socialist German Workers Party

Scene at the Signing of the Constitution of the United States, by Howard Chandler Christy. ... The gallon (abbreviation: gal) is a unit of volume. ... For other uses, see Drum (disambiguation). ... A typical drum A 44 gallon drum (known as a 55 gallon drum in the United States) is a cylindrical metal container (drum) with a nominal capacity of 44 imperial gallons, 55 U.S. gallons or 205 litre. ... Miles per hour is a unit of speed, expressing the number of international miles covered per hour. ... 55 mph speed limit being erected in response to the National Maximum Speed Law. ... A wedding anniversary is an anniversary which falls on the month and day a particular wedding took place, and which recurs every subsequent year, except for those who were married on February 29th. ... This is a list of country calling codes, also known as international direct dialing (IDD) codes, which are needed to access international telephone services. ... The European route E55 passes through the following cities: Helsingborg - Elsinore - Rostock - Berlin - Dresden - Teplice - Prague - Vienna - Ancona - Ioannina - Arta (bypasses) - Amphilochia - Agrinion - Messolonghi - Rhion * Antirrhion - Patras - Kourtesi - Marathia - Pyrgos - Epitalion - Zacharo - Kalo Nero - near Dorio - near Oichalia - Allagi - Thouria - Kalamáta From Helsingborg, the route continues northward through Sweden... Coordinates: , Country Municipality County SkÃ¥ne County Province Scania Charter 1085 Area [1]  - Total 37. ... Interstate 55 is an interstate highway in the central United States. ... This article is about the U.S. State. ... This article is about the U.S. State. ... For other uses, see Slang (disambiguation). ... A glass of root beer with foam Root beer is a beverage also known as Sasparilla outside of North America. ... This article is about the British comedian. ... Jean Girard is a fictional Formula One racer in the movie Talladega Nights: The Ballad of Ricky Bobby. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... Michael Curtis Waltrip (born April 30, 1963 in Owensboro, Kentucky) is a professional race car driver and owner of Michael Waltrip Racing. ... Spiro Theodore Agnew (November 9, 1918 – September 17, 1996) was the thirty-ninth Vice President of the United States serving under President Richard M. Nixon, and the fifty-fifth Governor of Maryland. ... Picasso redirects here. ... A typical cappuccino with foam. ... 55 Days at Peking is a 1963 historical epic film made by Samuel Bronston Productions and released by Allied Artists. ... Charlton Heston (born October 4, 1924) is an US-american film actor, known for playing larger-than-life heroic roles such as Moses in The Ten Commandments, Colonel George Taylor in Planet of the Apes, and Judah Ben-Hur in Ben-Hur. ... This article needs additional references or sources for verification. ... Britvic LSE: BVIC is a British producer of soft drinks. ... Hitler redirects here. ... The National Socialist German Workers Party (German: , or NSDAP, commonly, the Nazi Party), was a political party in Germany between 1920 and 1945. ...

Historical years

55 A.D., 55 B.C., 1955, 2055, etc. This article is about the year 55. ... Centuries: 2nd century BC - 1st century BC - 1st century Decades: 100s BC 90s BC 80s BC 70s BC 60s BC - 50s BC - 40s BC 30s BC 20s BC 10s BC 0s BC Years: 60 BC 59 BC 58 BC 57 BC 56 BC 55 BC 54 BC 53 BC 52... Year 1955 (MCMLV) was a common year starting on Saturday (link displays the 1955 Gregorian calendar). ... 2055 (MMLV) will be a common year starting on Friday of the Gregorian calendar. ...