Q: Is 551,720 a Prime Number?
A: No, 551,720 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 551720 can be evenly divided by 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 1,061 2,122 4,244 5,305 8,488 10,610 13,793 21,220 27,586 42,440 55,172 68,965 110,344 137,930 275,860 and 551,720, with no remainder.
Since 551,720 cannot be divided by just 1 and 551,720, it is not a prime number.