51155976 has 32 divisors (see below), whose sum is σ = 129513600. Its totient is φ = 16835520.

The previous prime is 51155969. The next prime is 51156011. The reversal of 51155976 is 67955115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11595 + ... + 15386.

It is an arithmetic number, because the mean of its divisors is an integer number (4047300).

Almost surely, 2^51155976 is an apocalyptic number.

It is an amenable number.

51155976 is an abundant number, since it is smaller than the sum of its proper divisors (78357624).

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

51155976 is a wasteful number, since it uses less digits than its factorization.

51155976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27069 (or 27065 counting only the distinct ones).

The product of its digits is 47250, while the sum is 39.

The square root of 51155976 is about 7152.3405959168. The cubic root of 51155976 is about 371.2206484067.

The spelling of 51155976 in words is "fifty-one million, one hundred fifty-five thousand, nine hundred seventy-six".