51559456 has 24 divisors (see below), whose sum is σ = 109316844. Its totient is φ = 23796480.

The previous prime is 51559447. The next prime is 51559481. The reversal of 51559456 is 65495515.

It can be written as a sum of positive squares in 2 ways, for example, as 51552400 + 7056 = 7180^2 + 84^2 .

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, 61555 + ... + 62386.

Almost surely, 2^51559456 is an apocalyptic number.

It is an amenable number.

51559456 is an abundant number, since it is smaller than the sum of its proper divisors (57757388).

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

51559456 is a wasteful number, since it uses less digits than its factorization.

51559456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123964 (or 123956 counting only the distinct ones).

The product of its digits is 135000, while the sum is 40.

The square root of 51559456 is about 7180.4913480903. The cubic root of 51559456 is about 372.1940637725.

The spelling of 51559456 in words is "fifty-one million, five hundred fifty-nine thousand, four hundred fifty-six".