Q: Is 561,560 a Prime Number?
A: No, 561,560 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 561560 can be evenly divided by 1 2 4 5 8 10 20 40 101 139 202 278 404 505 556 695 808 1,010 1,112 1,390 2,020 2,780 4,040 5,560 14,039 28,078 56,156 70,195 112,312 140,390 280,780 and 561,560, with no remainder.
Since 561,560 cannot be divided by just 1 and 561,560, it is not a prime number.