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Curious Properties of 153 By Shyam Sunder Gupta (691 words) |
 | It is seen that the sum of aliquot divisors of 153 is the square of the sum of the digits of 153. |
| The sum of all divisors of 153 is 234. |
| reach 153 (after the repeated process of summing the cubes of digits is done) in maximum 14 cycles. |
| Why 153? (672 words) |
| That means 153 is divisible by 9, since any number whose sum is divisible by 9 is itself divisible by 9. |
| That is because 153 is the seventeenth triangular number. |
| There are only 4 numbers besides 0 and 1, which have this property, namely that the sums of the cubes of their digits add to the number itself. |
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