A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 893550 can be evenly divided by 1 2 3 5 6 7 10 14 15 21 23 25 30 35 37 42 46 50 69 70 74 75 105 111 115 138 150 161 175 185 210 222 230 259 322 345 350 370 483 518 525 555 575 690 777 805 851 925 966 1,050 1,110 1,150 1,295 1,554 1,610 1,702 1,725 1,850 2,415 2,553 2,590 2,775 3,450 3,885 4,025 4,255 4,830 5,106 5,550 5,957 6,475 7,770 8,050 8,510 11,914 12,075 12,765 12,950 17,871 19,425 21,275 24,150 25,530 29,785 35,742 38,850 42,550 59,570 63,825 89,355 127,650 148,925 178,710 297,850 446,775 and 893,550, with no remainder.
Since 893,550 cannot be divided by just 1 and 893,550, it is not a prime number.