51039732 has 12 divisors (see below), whose sum is σ = 119092736. Its totient is φ = 17013240.

The previous prime is 51039683. The next prime is 51039773. The reversal of 51039732 is 23793015.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 51039732.

It is a congruent number.

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, 2126644 + ... + 2126667.

Almost surely, 2^51039732 is an apocalyptic number.

It is an amenable number.

51039732 is an abundant number, since it is smaller than the sum of its proper divisors (68053004).

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

51039732 is a wasteful number, since it uses less digits than its factorization.

51039732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253318 (or 4253316 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 51039732 is about 7144.2096833730. The cubic root of 51039732 is about 370.9392547600.

The spelling of 51039732 in words is "fifty-one million, thirty-nine thousand, seven hundred thirty-two".