Q: Is 561,840 a Prime Number?
A: No, 561,840 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 561840 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 2,341 4,682 7,023 9,364 11,705 14,046 18,728 23,410 28,092 35,115 37,456 46,820 56,184 70,230 93,640 112,368 140,460 187,280 280,920 and 561,840, with no remainder.
Since 561,840 cannot be divided by just 1 and 561,840, it is not a prime number.