56715571 has 4 divisors (see below), whose sum is σ = 61871544. Its totient is φ = 51559600.

The previous prime is 56715563. The next prime is 56715577. The reversal of 56715571 is 17551765.

56715571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56715571 - 2³ = 56715563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56715571.

It is not an unprimeable number, because it can be changed into a prime (56715577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2577970 + ... + 2577991.

It is an arithmetic number, because the mean of its divisors is an integer number (15467886).

Almost surely, 2^56715571 is an apocalyptic number.

56715571 is a deficient number, since it is larger than the sum of its proper divisors (5155973).

56715571 is a wasteful number, since it uses less digits than its factorization.

56715571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155972.

The product of its digits is 36750, while the sum is 37.

The square root of 56715571 is about 7530.9741069798. The cubic root of 56715571 is about 384.2089136464.

The spelling of 56715571 in words is "fifty-six million, seven hundred fifteen thousand, five hundred seventy-one".