51538886 has 48 divisors (see below), whose sum is σ = 93768192. Its totient is φ = 21168000.

The previous prime is 51538873. The next prime is 51538967. The reversal of 51538886 is 68883515.

51538886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 405755 + ... + 405881.

It is an arithmetic number, because the mean of its divisors is an integer number (1953504).

Almost surely, 2^51538886 is an apocalyptic number.

51538886 is a deficient number, since it is larger than the sum of its proper divisors (42229306).

51538886 is a wasteful number, since it uses less digits than its factorization.

51538886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 278 counting only the distinct ones).

The product of its digits is 230400, while the sum is 44.

The square root of 51538886 is about 7179.0588519666. The cubic root of 51538886 is about 372.1445607272.

The spelling of 51538886 in words is "fifty-one million, five hundred thirty-eight thousand, eight hundred eighty-six".