51087912 has 16 divisors (see below), whose sum is σ = 127719840. Its totient is φ = 17029296.

The previous prime is 51087893. The next prime is 51087943. The reversal of 51087912 is 21978015.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 1064308 + ... + 1064355.

It is an arithmetic number, because the mean of its divisors is an integer number (7982490).

Almost surely, 2^51087912 is an apocalyptic number.

It is an amenable number.

51087912 is an abundant number, since it is smaller than the sum of its proper divisors (76631928).

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

51087912 is a wasteful number, since it uses less digits than its factorization.

51087912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128672 (or 2128668 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 51087912 is about 7147.5808494903. The cubic root of 51087912 is about 371.0559366210.

The spelling of 51087912 in words is "fifty-one million, eighty-seven thousand, nine hundred twelve".