56520730 has 32 divisors (see below), whose sum is σ = 116816256. Its totient is φ = 19287744.

The previous prime is 56520727. The next prime is 56520749. The reversal of 56520730 is 3702565.

56520730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14112 + ... + 17668.

It is an arithmetic number, because the mean of its divisors is an integer number (3650508).

Almost surely, 2^56520730 is an apocalyptic number.

56520730 is an abundant number, since it is smaller than the sum of its proper divisors (60295526).

56520730 is a wasteful number, since it uses less digits than its factorization.

56520730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 56520730 is about 7518.0270018137. The cubic root of 56520730 is about 383.7684376829.

The spelling of 56520730 in words is "fifty-six million, five hundred twenty thousand, seven hundred thirty".