A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5437200 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 23 24 25 30 40 46 48 50 60 69 75 80 92 100 115 120 138 150 184 197 200 230 240 276 300 345 368 394 400 460 552 575 591 600 690 788 920 985 1,104 1,150 1,182 1,200 1,380 1,576 1,725 1,840 1,970 2,300 2,364 2,760 2,955 3,152 3,450 3,940 4,531 4,600 4,728 4,925 5,520 5,910 6,900 7,880 9,062 9,200 9,456 9,850 11,820 13,593 13,800 14,775 15,760 18,124 19,700 22,655 23,640 27,186 27,600 29,550 36,248 39,400 45,310 47,280 54,372 59,100 67,965 72,496 78,800 90,620 108,744 113,275 118,200 135,930 181,240 217,488 226,550 236,400 271,860 339,825 362,480 453,100 543,720 679,650 906,200 1,087,440 1,359,300 1,812,400 2,718,600 and 5,437,200, with no remainder.
Since 5,437,200 cannot be divided by just 1 and 5,437,200, it is not a prime number.