51313875 has 32 divisors (see below), whose sum is σ = 85949760. Its totient is φ = 27187200.

The previous prime is 51313853. The next prime is 51313891. The reversal of 51313875 is 57831315.

It is not a de Polignac number, because 51313875 - 2⁷ = 51313747 is a prime.

It is a super-2 number, since 2×51313875² = 5266227535031250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72021 + ... + 72729.

It is an arithmetic number, because the mean of its divisors is an integer number (2685930).

Almost surely, 2^51313875 is an apocalyptic number.

51313875 is a deficient number, since it is larger than the sum of its proper divisors (34635885).

51313875 is a wasteful number, since it uses less digits than its factorization.

51313875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 910 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 51313875 is about 7163.3703659660. The cubic root of 51313875 is about 371.6021949967.

The spelling of 51313875 in words is "fifty-one million, three hundred thirteen thousand, eight hundred seventy-five".