Q: Is 21,600 a Prime Number?
A: No, 21,600 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 21600 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 72 75 80 90 96 100 108 120 135 144 150 160 180 200 216 225 240 270 288 300 360 400 432 450 480 540 600 675 720 800 864 900 1,080 1,200 1,350 1,440 1,800 2,160 2,400 2,700 3,600 4,320 5,400 7,200 10,800 and 21,600, with no remainder.
Since 21,600 cannot be divided by just 1 and 21,600, it is not a prime number.