51363775 has 12 divisors (see below), whose sum is σ = 65245824. Its totient is φ = 40088000.

The previous prime is 51363751. The next prime is 51363787. The reversal of 51363775 is 57736315.

It is a happy number.

It is not a de Polignac number, because 51363775 - 2¹⁷ = 51232703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24031 + ... + 26080.

It is an arithmetic number, because the mean of its divisors is an integer number (5437152).

Almost surely, 2^51363775 is an apocalyptic number.

51363775 is a deficient number, since it is larger than the sum of its proper divisors (13882049).

51363775 is a wasteful number, since it uses less digits than its factorization.

51363775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50162 (or 50157 counting only the distinct ones).

The product of its digits is 66150, while the sum is 37.

The square root of 51363775 is about 7166.8525169701. The cubic root of 51363775 is about 371.7226103951.

It can be divided in two parts, 5136 and 3775, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 51363775 in words is "fifty-one million, three hundred sixty-three thousand, seven hundred seventy-five".