Q: Is 523,540 a Prime Number?
A: No, 523,540 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 523540 can be evenly divided by 1 2 4 5 10 20 26,177 52,354 104,708 130,885 261,770 and 523,540, with no remainder.
Since 523,540 cannot be divided by just 1 and 523,540, it is not a prime number.