Q: Is 522,640 a Prime Number?
A: No, 522,640 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 522640 can be evenly divided by 1 2 4 5 8 10 16 20 40 47 80 94 139 188 235 278 376 470 556 695 752 940 1,112 1,390 1,880 2,224 2,780 3,760 5,560 6,533 11,120 13,066 26,132 32,665 52,264 65,330 104,528 130,660 261,320 and 522,640, with no remainder.
Since 522,640 cannot be divided by just 1 and 522,640, it is not a prime number.