Interesting Number - 52

If you want to do something that no human has ever done before, shuffle a pack of cards.

(When you shuffle a normal pack of 52 playing cards, the number of possible permutations is ‘52 factorial’ otherwise known as 52! or 52 shriek.

This works out as 52 times 51 times 50 ... all the way down to one, which gives you the sum of  

Source: QI