# 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 195

- 195 is the smallest integer divisible by its digital sum but not by its digital root
- 195 is the smallest groupless number, that is it is the smallest number n whose set of pairwise products up to n cannot be completed to the multiplication table of a finite group of order n (submitted by Andrew Pollington)