A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5750052 can be evenly divided by 1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 49 66 77 84 98 127 132 147 154 196 231 254 294 308 343 381 462 508 539 588 686 762 889 924 1,029 1,078 1,372 1,397 1,524 1,617 1,778 2,058 2,156 2,667 2,794 3,234 3,556 3,773 4,116 4,191 5,334 5,588 6,223 6,468 7,546 8,382 9,779 10,668 11,319 12,446 15,092 16,764 18,669 19,558 22,638 24,892 29,337 37,338 39,116 43,561 45,276 58,674 68,453 74,676 87,122 117,348 130,683 136,906 174,244 205,359 261,366 273,812 410,718 479,171 522,732 821,436 958,342 1,437,513 1,916,684 2,875,026 and 5,750,052, with no remainder.
Since 5,750,052 cannot be divided by just 1 and 5,750,052, it is not a prime number.