56520406 has 8 divisors (see below), whose sum is σ = 85151520. Its totient is φ = 28136568.

The previous prime is 56520403. The next prime is 56520433. The reversal of 56520406 is 60402565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56520403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61246 + ... + 62161.

It is an arithmetic number, because the mean of its divisors is an integer number (10643940).

Almost surely, 2^56520406 is an apocalyptic number.

56520406 is a deficient number, since it is larger than the sum of its proper divisors (28631114).

56520406 is a wasteful number, since it uses less digits than its factorization.

56520406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123638.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 56520406 is about 7518.0054535761. The cubic root of 56520406 is about 383.7677043755.

The spelling of 56520406 in words is "fifty-six million, five hundred twenty thousand, four hundred six".