Q: Is 1,561,530 a Prime Number?
A: No, 1,561,530 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 1561530 can be evenly divided by 1 2 3 5 6 10 15 30 52,051 104,102 156,153 260,255 312,306 520,510 780,765 and 1,561,530, with no remainder.
Since 1,561,530 cannot be divided by just 1 and 1,561,530, it is not a prime number.