506 = 2 x 11 x 23.
506 is a pronic number because it is the product of two consecutive integers: 22 x 23 = 506.
506 is the sum of the first eleven squares: 12 + 22 + . . . + 102 + 112 = 506 (which makes it a square pyramidal number).
506 is a hendecagonal number.
The telephone area code 506 covers the Canadian province of New Brunswick.
Source: Number Gossip
