51038864 has 20 divisors (see below), whose sum is σ = 104093040. Its totient is φ = 24176160.

The previous prime is 51038849. The next prime is 51038881. The reversal of 51038864 is 46883015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83642 + ... + 84249.

It is an arithmetic number, because the mean of its divisors is an integer number (5204652).

Almost surely, 2^51038864 is an apocalyptic number.

It is an amenable number.

51038864 is an abundant number, since it is smaller than the sum of its proper divisors (53054176).

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

51038864 is a wasteful number, since it uses less digits than its factorization.

51038864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167918 (or 167912 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 51038864 is about 7144.1489346178. The cubic root of 51038864 is about 370.9371519727.

The spelling of 51038864 in words is "fifty-one million, thirty-eight thousand, eight hundred sixty-four".