51705056 has 24 divisors (see below), whose sum is σ = 109625544. Its totient is φ = 23863680.

The previous prime is 51705047. The next prime is 51705077. The reversal of 51705056 is 65050715.

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, 61730 + ... + 62561.

It is an arithmetic number, because the mean of its divisors is an integer number (4567731).

Almost surely, 2^51705056 is an apocalyptic number.

It is an amenable number.

51705056 is an abundant number, since it is smaller than the sum of its proper divisors (57920488).

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

51705056 is a wasteful number, since it uses less digits than its factorization.

51705056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124314 (or 124306 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 51705056 is about 7190.6227824855. The cubic root of 51705056 is about 372.5440837877.

The spelling of 51705056 in words is "fifty-one million, seven hundred five thousand, fifty-six".