51428856 has 32 divisors (see below), whose sum is σ = 130683600. Its totient is φ = 16861440.

The previous prime is 51428843. The next prime is 51428863. The reversal of 51428856 is 65882415.

It is a congruent number.

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, 16101 + ... + 19028.

Almost surely, 2^51428856 is an apocalyptic number.

It is an amenable number.

51428856 is an abundant number, since it is smaller than the sum of its proper divisors (79254744).

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

51428856 is a wasteful number, since it uses less digits than its factorization.

51428856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35199 (or 35195 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 51428856 is about 7171.3914967738. The cubic root of 51428856 is about 371.8795424533.

The spelling of 51428856 in words is "fifty-one million, four hundred twenty-eight thousand, eight hundred fifty-six".