The number 53 is the 16th prime number.
It is how many years the Grinch tolerated the Christmas cheer in Whoville before retaliating.
It is the code for international direct dial calls to Cuba.
And it is the number of players on a regular-season active NFL roster.
At this time of year, the Giants, and every other NFL team, carries 90 players. By 4 p.m. on Sept. 1, that number drops to 53.
Here is NJ Advance's Media's latest 53-man roster projection for the Giants, updated after the first preseason game.