A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5007800 can be evenly divided by 1 2 4 5 7 8 10 14 20 25 28 35 40 49 50 56 70 73 98 100 140 146 175 196 200 245 280 292 343 350 365 392 490 511 584 686 700 730 980 1,022 1,225 1,372 1,400 1,460 1,715 1,825 1,960 2,044 2,450 2,555 2,744 2,920 3,430 3,577 3,650 4,088 4,900 5,110 6,860 7,154 7,300 8,575 9,800 10,220 12,775 13,720 14,308 14,600 17,150 17,885 20,440 25,039 25,550 28,616 34,300 35,770 50,078 51,100 68,600 71,540 89,425 100,156 102,200 125,195 143,080 178,850 200,312 250,390 357,700 500,780 625,975 715,400 1,001,560 1,251,950 2,503,900 and 5,007,800, with no remainder.
Since 5,007,800 cannot be divided by just 1 and 5,007,800, it is not a prime number.