51871632 has 40 divisors (see below), whose sum is σ = 137628096. Its totient is φ = 16822656.

The previous prime is 51871613. The next prime is 51871667. The reversal of 51871632 is 23617815.

It is a junction number, because it is equal to n+sod(n) for n = 51871593 and 51871602.

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, 12828 + ... + 16379.

Almost surely, 2^51871632 is an apocalyptic number.

It is an amenable number.

51871632 is an abundant number, since it is smaller than the sum of its proper divisors (85756464).

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

51871632 is a wasteful number, since it uses less digits than its factorization.

51871632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29255 (or 29249 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 51871632 is about 7202.1963316755. The cubic root of 51871632 is about 372.9437247840.

The spelling of 51871632 in words is "fifty-one million, eight hundred seventy-one thousand, six hundred thirty-two".