51872864 has 24 divisors (see below), whose sum is σ = 102470760. Its totient is φ = 25848576.

The previous prime is 51872861. The next prime is 51872897. The reversal of 51872864 is 46827815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51872861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7427 + ... + 12605.

It is an arithmetic number, because the mean of its divisors is an integer number (4269615).

Almost surely, 2^51872864 is an apocalyptic number.

It is an amenable number.

51872864 is a deficient number, since it is larger than the sum of its proper divisors (50597896).

51872864 is a wasteful number, since it uses less digits than its factorization.

51872864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502 (or 5494 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 51872864 is about 7202.2818606328. The cubic root of 51872864 is about 372.9466773486.

The spelling of 51872864 in words is "fifty-one million, eight hundred seventy-two thousand, eight hundred sixty-four".