51108992 has 32 divisors (see below), whose sum is σ = 111078000. Its totient is φ = 23230720.

The previous prime is 51108989. The next prime is 51108997. The reversal of 51108992 is 29980115.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×51108992² = 5224258126512128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51108997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16742 + ... + 19557.

Almost surely, 2^51108992 is an apocalyptic number.

It is an amenable number.

51108992 is an abundant number, since it is smaller than the sum of its proper divisors (59969008).

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

51108992 is a wasteful number, since it uses less digits than its factorization.

51108992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36324 (or 36312 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 51108992 is about 7149.0553222087. The cubic root of 51108992 is about 371.1069648927.

The spelling of 51108992 in words is "fifty-one million, one hundred eight thousand, nine hundred ninety-two".