51916632 has 16 divisors (see below), whose sum is σ = 129791640. Its totient is φ = 17305536.

The previous prime is 51916597. The next prime is 51916643. The reversal of 51916632 is 23661915.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51916593 and 51916602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081573 + ... + 1081620.

Almost surely, 2^51916632 is an apocalyptic number.

It is an amenable number.

51916632 is an abundant number, since it is smaller than the sum of its proper divisors (77875008).

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

51916632 is a wasteful number, since it uses less digits than its factorization.

51916632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163202 (or 2163198 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 51916632 is about 7205.3197014428. The cubic root of 51916632 is about 373.0515397638.

The spelling of 51916632 in words is "fifty-one million, nine hundred sixteen thousand, six hundred thirty-two".