Number Gossip

(Enter a number and I'll tell you everything you wanted to know about it but were afraid to ask.)

Unique Properties of 215

  • 215 is the smallest number n such that its sum of digits cubed is the reversal of n (excluding powers of 10)
  • 215 is the number of unordered sets of four integers, such that their reciprocals sum to 1

Common Properties of 215

Composite
Deficient
Evil
Odd
Square-free