Fatto matematico: 522 is the number of ways to place a non-attacking white and black pawn on a 6×6 chessboard.
Trivia: 522 is an uninteresting number.
Data storica: June 5th is the day in 1956 that Elvis Presley introduces his new single, "Hound Dog", on The Milton Berle Show, scandalizing the audience with his suggestive hip movements.