51631958 has 32 divisors (see below), whose sum is σ = 94125888. Its totient is φ = 20736000.

The previous prime is 51631901. The next prime is 51631961. The reversal of 51631958 is 85913615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95168 + ... + 95708.

It is an arithmetic number, because the mean of its divisors is an integer number (2941434).

Almost surely, 2^51631958 is an apocalyptic number.

51631958 is a deficient number, since it is larger than the sum of its proper divisors (42493930).

51631958 is a wasteful number, since it uses less digits than its factorization.

51631958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 32400, while the sum is 38.

The square root of 51631958 is about 7185.5381148526. The cubic root of 51631958 is about 372.3684396449.

The spelling of 51631958 in words is "fifty-one million, six hundred thirty-one thousand, nine hundred fifty-eight".