Q: Is 551,440 a Prime Number?
A: No, 551,440 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 551440 can be evenly divided by 1 2 4 5 8 10 16 20 40 61 80 113 122 226 244 305 452 488 565 610 904 976 1,130 1,220 1,808 2,260 2,440 4,520 4,880 6,893 9,040 13,786 27,572 34,465 55,144 68,930 110,288 137,860 275,720 and 551,440, with no remainder.
Since 551,440 cannot be divided by just 1 and 551,440, it is not a prime number.