51086368 has 24 divisors (see below), whose sum is σ = 102719232. Its totient is φ = 24998976.

The previous prime is 51086363. The next prime is 51086407. The reversal of 51086368 is 86368015.

It is not an unprimeable number, because it can be changed into a prime (51086363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15480 + ... + 18487.

It is an arithmetic number, because the mean of its divisors is an integer number (4279968).

Almost surely, 2^51086368 is an apocalyptic number.

It is an amenable number.

51086368 is an abundant number, since it is smaller than the sum of its proper divisors (51632864).

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

51086368 is a wasteful number, since it uses less digits than its factorization.

51086368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34024 (or 34016 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 51086368 is about 7147.4728401023. The cubic root of 51086368 is about 371.0521985147.

It can be divided in two parts, 5108 and 6368, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 51086368 in words is "fifty-one million, eighty-six thousand, three hundred sixty-eight".