56809530 has 48 divisors (see below), whose sum is σ = 148228704. Its totient is φ = 15095520.

The previous prime is 56809469. The next prime is 56809537. The reversal of 56809530 is 3590865.

56809530 is a `hidden beast` number, since 568 + 0 + 95 + 3 + 0 = 666.

56809530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (56809537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28837 + ... + 30743.

It is an arithmetic number, because the mean of its divisors is an integer number (3088098).

Almost surely, 2^56809530 is an apocalyptic number.

56809530 is an abundant number, since it is smaller than the sum of its proper divisors (91419174).

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

56809530 is a wasteful number, since it uses less digits than its factorization.

56809530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251 (or 2248 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 56809530 is about 7537.2096959021. The cubic root of 56809530 is about 384.4209657502.

The spelling of 56809530 in words is "fifty-six million, eight hundred nine thousand, five hundred thirty".