51731952 has 40 divisors (see below), whose sum is σ = 141504336. Its totient is φ = 16229376.

The previous prime is 51731941. The next prime is 51731993. The reversal of 51731952 is 25913715.

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, 30883 + ... + 32514.

Almost surely, 2^51731952 is an apocalyptic number.

It is an amenable number.

51731952 is an abundant number, since it is smaller than the sum of its proper divisors (89772384).

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

51731952 is a wasteful number, since it uses less digits than its factorization.

51731952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63425 (or 63419 counting only the distinct ones).

The product of its digits is 9450, while the sum is 33.

The square root of 51731952 is about 7192.4927528639. The cubic root of 51731952 is about 372.6086694044.

The spelling of 51731952 in words is "fifty-one million, seven hundred thirty-one thousand, nine hundred fifty-two".