Q: Is 561,520 a Prime Number?
A: No, 561,520 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 561520 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 7,019 14,038 28,076 35,095 56,152 70,190 112,304 140,380 280,760 and 561,520, with no remainder.
Since 561,520 cannot be divided by just 1 and 561,520, it is not a prime number.