Q: Is 1,564,393 a Prime Number?
A: Yes, 1,564,393 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1564393 can be evenly divided by 1 and 1,564,393, with no remainder.
Since 1,564,393 can be divided by just 1 and 1,564,393, it is a prime number.