56530540 has 24 divisors (see below), whose sum is σ = 129506832. Its totient is φ = 20556480.

The previous prime is 56530511. The next prime is 56530603. The reversal of 56530540 is 4503565.

It is a junction number, because it is equal to n+sod(n) for n = 56530499 and 56530508.

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, 128259 + ... + 128698.

It is an arithmetic number, because the mean of its divisors is an integer number (5396118).

Almost surely, 2^56530540 is an apocalyptic number.

It is an amenable number.

56530540 is an abundant number, since it is smaller than the sum of its proper divisors (72976292).

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

56530540 is a wasteful number, since it uses less digits than its factorization.

56530540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256977 (or 256975 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 56530540 is about 7518.6794053211. The cubic root of 56530540 is about 383.7906392750.

The spelling of 56530540 in words is "fifty-six million, five hundred thirty thousand, five hundred forty".