51632256 has 64 divisors (see below), whose sum is σ = 147712320. Its totient is φ = 15885312.

The previous prime is 51632249. The next prime is 51632261. The reversal of 51632256 is 65223615.

It is a tau number, because it is divible by the number of its divisors (64).

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, 180 + ... + 10163.

It is an arithmetic number, because the mean of its divisors is an integer number (2308005).

Almost surely, 2^51632256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51632256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73856160).

51632256 is an abundant number, since it is smaller than the sum of its proper divisors (96080064).

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

51632256 is a wasteful number, since it uses less digits than its factorization.

51632256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10373 (or 10361 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 51632256 is about 7185.5588509176. The cubic root of 51632256 is about 372.3691560332.

The spelling of 51632256 in words is "fifty-one million, six hundred thirty-two thousand, two hundred fifty-six".