Is it a set number or is it different for everyone
Not every pokemon takes the same amount of steps to hatch their egg, it varies on pokemon, good question though ;)
Go to the individual pages of a Pokemon on serebii.net. You can find the number of steps needed to hatch your Pokemon (it is different for every Pokemon). It is titled as "Base Egg Steps". By carrying a Pokemon with the Flame Body or Magma Armor ability you can speed up this process though (might I suggest Magcargo? Only thing he is good for.)