A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6027750 can be evenly divided by 1 2 3 5 6 9 10 15 18 19 25 27 30 38 45 47 50 54 57 75 90 94 95 114 125 135 141 150 171 190 225 235 250 270 282 285 342 375 423 450 470 475 513 570 675 705 750 846 855 893 950 1,026 1,125 1,175 1,269 1,350 1,410 1,425 1,710 1,786 2,115 2,250 2,350 2,375 2,538 2,565 2,679 2,850 3,375 3,525 4,230 4,275 4,465 4,750 5,130 5,358 5,875 6,345 6,750 7,050 7,125 8,037 8,550 8,930 10,575 11,750 12,690 12,825 13,395 14,250 16,074 17,625 21,150 21,375 22,325 24,111 25,650 26,790 31,725 35,250 40,185 42,750 44,650 48,222 52,875 63,450 64,125 66,975 80,370 105,750 111,625 120,555 128,250 133,950 158,625 200,925 223,250 241,110 317,250 334,875 401,850 602,775 669,750 1,004,625 1,205,550 2,009,250 3,013,875 and 6,027,750, with no remainder.
Since 6,027,750 cannot be divided by just 1 and 6,027,750, it is not a prime number.