A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6011550 can be evenly divided by 1 2 3 5 6 9 10 15 18 25 27 30 45 50 54 61 73 75 90 122 135 146 150 183 219 225 270 305 365 366 438 450 549 610 657 675 730 915 1,095 1,098 1,314 1,350 1,525 1,647 1,825 1,830 1,971 2,190 2,745 3,050 3,285 3,294 3,650 3,942 4,453 4,575 5,475 5,490 6,570 8,235 8,906 9,150 9,855 10,950 13,359 13,725 16,425 16,470 19,710 22,265 26,718 27,450 32,850 40,077 41,175 44,530 49,275 66,795 80,154 82,350 98,550 111,325 120,231 133,590 200,385 222,650 240,462 333,975 400,770 601,155 667,950 1,001,925 1,202,310 2,003,850 3,005,775 and 6,011,550, with no remainder.
Since 6,011,550 cannot be divided by just 1 and 6,011,550, it is not a prime number.