51812764 has 12 divisors (see below), whose sum is σ = 92781304. Its totient is φ = 25303824.

The previous prime is 51812759. The next prime is 51812771. The reversal of 51812764 is 46721815.

51812764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150447 + ... + 150790.

Almost surely, 2^51812764 is an apocalyptic number.

It is an amenable number.

51812764 is a deficient number, since it is larger than the sum of its proper divisors (40968540).

51812764 is a wasteful number, since it uses less digits than its factorization.

51812764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301284 (or 301282 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 51812764 is about 7198.1083626186. The cubic root of 51812764 is about 372.8025894415.

The spelling of 51812764 in words is "fifty-one million, eight hundred twelve thousand, seven hundred sixty-four".