56572341387 has 4 divisors (see below), whose sum is σ = 75429788520. Its totient is φ = 37714894256.

The previous prime is 56572341359. The next prime is 56572341403. The reversal of 56572341387 is 78314327565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56572341387 - 2¹⁵ = 56572308619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56572341887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9428723562 + ... + 9428723567.

It is an arithmetic number, because the mean of its divisors is an integer number (18857447130).

Almost surely, 2^56572341387 is an apocalyptic number.

56572341387 is a deficient number, since it is larger than the sum of its proper divisors (18857447133).

56572341387 is a wasteful number, since it uses less digits than its factorization.

56572341387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18857447132.

The product of its digits is 4233600, while the sum is 51.

The spelling of 56572341387 in words is "fifty-six billion, five hundred seventy-two million, three hundred forty-one thousand, three hundred eighty-seven".