Q: Is 521,970 a Prime Number?
A: No, 521,970 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 521970 can be evenly divided by 1 2 3 5 6 10 15 30 127 137 254 274 381 411 635 685 762 822 1,270 1,370 1,905 2,055 3,810 4,110 17,399 34,798 52,197 86,995 104,394 173,990 260,985 and 521,970, with no remainder.
Since 521,970 cannot be divided by just 1 and 521,970, it is not a prime number.