Q: Is 1,537,220 a Prime Number?
A: No, 1,537,220 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 1537220 can be evenly divided by 1 2 4 5 10 20 101 202 404 505 761 1,010 1,522 2,020 3,044 3,805 7,610 15,220 76,861 153,722 307,444 384,305 768,610 and 1,537,220, with no remainder.
Since 1,537,220 cannot be divided by just 1 and 1,537,220, it is not a prime number.