56520799 has 2 divisors, whose sum is σ = 56520800. Its totient is φ = 56520798.

The previous prime is 56520749. The next prime is 56520809. The reversal of 56520799 is 99702565.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56520799 - 2⁷ = 56520671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56520749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28260399 + 28260400.

It is an arithmetic number, because the mean of its divisors is an integer number (28260400).

Almost surely, 2^56520799 is an apocalyptic number.

56520799 is a deficient number, since it is larger than the sum of its proper divisors (1).

56520799 is an equidigital number, since it uses as much as digits as its factorization.

56520799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 56520799 is about 7518.0315907823. The cubic root of 56520799 is about 383.7685938498.

The spelling of 56520799 in words is "fifty-six million, five hundred twenty thousand, seven hundred ninety-nine".