56520518 has 16 divisors (see below), whose sum is σ = 86093280. Its totient is φ = 27825600.

The previous prime is 56520517. The next prime is 56520521. The reversal of 56520518 is 81502565.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56520511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54848 + ... + 55868.

It is an arithmetic number, because the mean of its divisors is an integer number (5380830).

Almost surely, 2^56520518 is an apocalyptic number.

56520518 is a deficient number, since it is larger than the sum of its proper divisors (29572762).

56520518 is a wasteful number, since it uses less digits than its factorization.

56520518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 56520518 is about 7518.0129023566. The cubic root of 56520518 is about 383.7679578648.

The spelling of 56520518 in words is "fifty-six million, five hundred twenty thousand, five hundred eighteen".