Q: Is 543,659 a Prime Number?
A: Yes, 543,659 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 543659 can be evenly divided by 1 and 543,659, with no remainder.
Since 543,659 can be divided by just 1 and 543,659, it is a prime number.