Q: Is 520,540 a Prime Number?
A: No, 520,540 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 520540 can be evenly divided by 1 2 4 5 10 17 20 34 68 85 170 340 1,531 3,062 6,124 7,655 15,310 26,027 30,620 52,054 104,108 130,135 260,270 and 520,540, with no remainder.
Since 520,540 cannot be divided by just 1 and 520,540, it is not a prime number.