Q: Is 561,573 a Prime Number?
A: No, 561,573 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 561573 can be evenly divided by 1 3 9 27 81 243 2,311 6,933 20,799 62,397 187,191 and 561,573, with no remainder.
Since 561,573 cannot be divided by just 1 and 561,573, it is not a prime number.