51864934 has 16 divisors (see below), whose sum is σ = 87797520. Its totient is φ = 22761760.

The previous prime is 51864893. The next prime is 51864941. The reversal of 51864934 is 43946815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40009 + ... + 41284.

It is an arithmetic number, because the mean of its divisors is an integer number (5487345).

Almost surely, 2^51864934 is an apocalyptic number.

51864934 is a deficient number, since it is larger than the sum of its proper divisors (35932586).

51864934 is a wasteful number, since it uses less digits than its factorization.

51864934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81335.

The product of its digits is 103680, while the sum is 40.

The square root of 51864934 is about 7201.7313196203. The cubic root of 51864934 is about 372.9276717925.

The spelling of 51864934 in words is "fifty-one million, eight hundred sixty-four thousand, nine hundred thirty-four".