56520039 has 8 divisors (see below), whose sum is σ = 78636672. Its totient is φ = 36041720.

The previous prime is 56520029. The next prime is 56520067. The reversal of 56520039 is 93002565.

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

It is a cyclic number.

It is not a de Polignac number, because 56520039 - 2²⁰ = 55471463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56519988 and 56520015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56520029) 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 7 ways as a sum of consecutive naturals, for example, 409497 + ... + 409634.

It is an arithmetic number, because the mean of its divisors is an integer number (9829584).

Almost surely, 2^56520039 is an apocalyptic number.

56520039 is a deficient number, since it is larger than the sum of its proper divisors (22116633).

56520039 is a wasteful number, since it uses less digits than its factorization.

56520039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819157.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 56520039 is about 7517.9810454669. The cubic root of 56520039 is about 383.7668737430.

The spelling of 56520039 in words is "fifty-six million, five hundred twenty thousand, thirty-nine".