51147632 has 20 divisors (see below), whose sum is σ = 99341856. Its totient is φ = 25511040.

The previous prime is 51147589. The next prime is 51147659. The reversal of 51147632 is 23674115.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51147595 and 51147604.

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, 3188 + ... + 10604.

Almost surely, 2^51147632 is an apocalyptic number.

It is an amenable number.

51147632 is a deficient number, since it is larger than the sum of its proper divisors (48194224).

51147632 is a wasteful number, since it uses less digits than its factorization.

51147632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856 (or 7850 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 51147632 is about 7151.7572665744. The cubic root of 51147632 is about 371.2004641666.

The spelling of 51147632 in words is "fifty-one million, one hundred forty-seven thousand, six hundred thirty-two".