51447232 has 28 divisors (see below), whose sum is σ = 102372160. Its totient is φ = 25652736.

The previous prime is 51447211. The next prime is 51447257. The reversal of 51447232 is 23274415.

It is a self number, because there is not a number n which added to its sum of digits gives 51447232.

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, 28369 + ... + 30127.

Almost surely, 2^51447232 is an apocalyptic number.

It is an amenable number.

51447232 is a deficient number, since it is larger than the sum of its proper divisors (50924928).

51447232 is a wasteful number, since it uses less digits than its factorization.

51447232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2218 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 51447232 is about 7172.6725841906. The cubic root of 51447232 is about 371.9238291648.

The spelling of 51447232 in words is "fifty-one million, four hundred forty-seven thousand, two hundred thirty-two".