51977632 has 36 divisors (see below), whose sum is σ = 119041650. Its totient is φ = 22275456.

The previous prime is 51977621. The next prime is 51977641. The reversal of 51977632 is 23677915.

It can be written as a sum of positive squares in only one way, i.e., 27415696 + 24561936 = 5236^2 + 4956^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15007 + ... + 18142.

Almost surely, 2^51977632 is an apocalyptic number.

It is an amenable number.

51977632 is an abundant number, since it is smaller than the sum of its proper divisors (67064018).

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

51977632 is a wasteful number, since it uses less digits than its factorization.

51977632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33173 (or 33158 counting only the distinct ones).

The product of its digits is 79380, while the sum is 40.

The square root of 51977632 is about 7209.5514423576. The cubic root of 51977632 is about 373.1975895385.

The spelling of 51977632 in words is "fifty-one million, nine hundred seventy-seven thousand, six hundred thirty-two".