A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5032860 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 23 28 30 35 42 46 60 69 70 84 92 105 115 138 140 161 210 230 276 322 345 420 460 483 521 644 690 805 966 1,042 1,380 1,563 1,610 1,932 2,084 2,415 2,605 3,126 3,220 3,647 4,830 5,210 6,252 7,294 7,815 9,660 10,420 10,941 11,983 14,588 15,630 18,235 21,882 23,966 31,260 35,949 36,470 43,764 47,932 54,705 59,915 71,898 72,940 83,881 109,410 119,830 143,796 167,762 179,745 218,820 239,660 251,643 335,524 359,490 419,405 503,286 718,980 838,810 1,006,572 1,258,215 1,677,620 2,516,430 and 5,032,860, with no remainder.
Since 5,032,860 cannot be divided by just 1 and 5,032,860, it is not a prime number.