56571390539 has 8 divisors (see below), whose sum is σ = 56920526208. Its totient is φ = 56222657280.

The previous prime is 56571390527. The next prime is 56571390553. The reversal of 56571390539 is 93509317565.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56571390539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56571390599) 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, 183899 + ... + 383355.

It is an arithmetic number, because the mean of its divisors is an integer number (7115065776).

Almost surely, 2^56571390539 is an apocalyptic number.

56571390539 is a deficient number, since it is larger than the sum of its proper divisors (349135669).

56571390539 is a wasteful number, since it uses less digits than its factorization.

56571390539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201205.

The product of its (nonzero) digits is 3827250, while the sum is 53.

The spelling of 56571390539 in words is "fifty-six billion, five hundred seventy-one million, three hundred ninety thousand, five hundred thirty-nine".