51878512 has 40 divisors (see below), whose sum is σ = 120924800. Its totient is φ = 21062592.

The previous prime is 51878507. The next prime is 51878521. The reversal of 51878512 is 21587815.

51878512 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 7 ways as a sum of consecutive naturals, for example, 10062 + ... + 14317.

It is an arithmetic number, because the mean of its divisors is an integer number (3023120).

Almost surely, 2^51878512 is an apocalyptic number.

It is an amenable number.

51878512 is an abundant number, since it is smaller than the sum of its proper divisors (69046288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51878512 is a wasteful number, since it uses less digits than its factorization.

51878512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24413 (or 24407 counting only the distinct ones).

The product of its digits is 22400, while the sum is 37.

The square root of 51878512 is about 7202.6739479168. The cubic root of 51878512 is about 372.9602125333.

The spelling of 51878512 in words is "fifty-one million, eight hundred seventy-eight thousand, five hundred twelve".