56520539 has 2 divisors, whose sum is σ = 56520540. Its totient is φ = 56520538.

The previous prime is 56520521. The next prime is 56520547. The reversal of 56520539 is 93502565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56520539 - 2²⁴ = 39743323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56520499 and 56520508.

It is not a weakly prime, because it can be changed into another prime (56520589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28260269 + 28260270.

It is an arithmetic number, because the mean of its divisors is an integer number (28260270).

Almost surely, 2^56520539 is an apocalyptic number.

56520539 is a deficient number, since it is larger than the sum of its proper divisors (1).

56520539 is an equidigital number, since it uses as much as digits as its factorization.

56520539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 56520539 is about 7518.0142990021. The cubic root of 56520539 is about 383.7680053940.

The spelling of 56520539 in words is "fifty-six million, five hundred twenty thousand, five hundred thirty-nine".