51631932 has 24 divisors (see below), whose sum is σ = 131427072. Its totient is φ = 15646000.

The previous prime is 51631901. The next prime is 51631961. The reversal of 51631932 is 23913615.

It is a self number, because there is not a number n which added to its sum of digits gives 51631932.

It is a congruent number.

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, 195444 + ... + 195707.

It is an arithmetic number, because the mean of its divisors is an integer number (5476128).

Almost surely, 2^51631932 is an apocalyptic number.

It is an amenable number.

51631932 is an abundant number, since it is smaller than the sum of its proper divisors (79795140).

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

51631932 is a wasteful number, since it uses less digits than its factorization.

51631932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391169 (or 391167 counting only the distinct ones).

The product of its digits is 4860, while the sum is 30.

The square root of 51631932 is about 7185.5363056629. The cubic root of 51631932 is about 372.3683771411.

The spelling of 51631932 in words is "fifty-one million, six hundred thirty-one thousand, nine hundred thirty-two".