A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5548284 can be evenly divided by 1 2 3 4 6 7 9 12 14 18 21 27 28 36 41 42 54 63 82 84 108 123 126 164 179 189 246 252 287 358 369 378 492 537 574 716 738 756 861 1,074 1,107 1,148 1,253 1,476 1,611 1,722 2,148 2,214 2,506 2,583 3,222 3,444 3,759 4,428 4,833 5,012 5,166 6,444 7,339 7,518 7,749 9,666 10,332 11,277 14,678 15,036 15,498 19,332 22,017 22,554 29,356 30,996 33,831 44,034 45,108 51,373 66,051 67,662 88,068 102,746 132,102 135,324 154,119 198,153 205,492 264,204 308,238 396,306 462,357 616,476 792,612 924,714 1,387,071 1,849,428 2,774,142 and 5,548,284, with no remainder.
Since 5,548,284 cannot be divided by just 1 and 5,548,284, it is not a prime number.