Seapraiser (9 July 2003)
"234 --153---'09   =2009?"


153 / (1 + 5 + 3) = 17Since reverse of 153, i.e. 351 is also a Harshad number(or Niven Number), 153 can be termed as a reversible Harshad number(or reversible Niven Number). 153 = 3 * 51Note that the digits used in multipliers are same as in product.
135 = 11 + 32 + 53
1 + 3 + 9 + 17 + 51 + 153 = 234The p

roduct of all divisors of 153 is 23409:1 *

 3 * 9 * 17 * 51 * 153 = 23409

Note that the product of ali

quot divisors of 153 contain the sum of all divisors of 153 juxtaposed:23409 = 234:09

234 = Sum of all divisors of 153

09 = Square root of the sum of aliquot divisors of 153.

For example: Take the number 108

13 + 03 + 83 = 513 and 53 + 13 + 33 = 153

So, the number 108 reaches 153

in two cycles and it can be represented as

108®513®153