51312375 has 48 divisors (see below), whose sum is σ = 97976736. Its totient is φ = 25747200.

The previous prime is 51312353. The next prime is 51312403. The reversal of 51312375 is 57321315.

It is not a de Polignac number, because 51312375 - 2⁸ = 51312119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17784 + ... + 20466.

It is an arithmetic number, because the mean of its divisors is an integer number (2041182).

Almost surely, 2^51312375 is an apocalyptic number.

51312375 is a deficient number, since it is larger than the sum of its proper divisors (46664361).

51312375 is a wasteful number, since it uses less digits than its factorization.

51312375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2708 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 51312375 is about 7163.2656658817. The cubic root of 51312375 is about 371.5985740870.

The spelling of 51312375 in words is "fifty-one million, three hundred twelve thousand, three hundred seventy-five".