Q: Is 531,125 a Prime Number?
A: No, 531,125 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 531125 can be evenly divided by 1 5 7 25 35 125 175 607 875 3,035 4,249 15,175 21,245 75,875 106,225 and 531,125, with no remainder.
Since 531,125 cannot be divided by just 1 and 531,125, it is not a prime number.