Q: Is 520,820 a Prime Number?
A: No, 520,820 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 520820 can be evenly divided by 1 2 4 5 10 20 26,041 52,082 104,164 130,205 260,410 and 520,820, with no remainder.
Since 520,820 cannot be divided by just 1 and 520,820, it is not a prime number.