Q: Is 542,555 a Prime Number?
A: No, 542,555 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 542555 can be evenly divided by 1 5 13 17 65 85 221 491 1,105 2,455 6,383 8,347 31,915 41,735 108,511 and 542,555, with no remainder.
Since 542,555 cannot be divided by just 1 and 542,555, it is not a prime number.