56716571 has 4 divisors (see below), whose sum is σ = 58099944. Its totient is φ = 55333200.

The previous prime is 56716567. The next prime is 56716591. The reversal of 56716571 is 17561765.

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 56716571 - 2² = 56716567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56716591) 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, 691625 + ... + 691706.

It is an arithmetic number, because the mean of its divisors is an integer number (14524986).

Almost surely, 2^56716571 is an apocalyptic number.

56716571 is a deficient number, since it is larger than the sum of its proper divisors (1383373).

56716571 is a wasteful number, since it uses less digits than its factorization.

56716571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383372.

The product of its digits is 44100, while the sum is 38.

The square root of 56716571 is about 7531.0404991608. The cubic root of 56716571 is about 384.2111717368.

The spelling of 56716571 in words is "fifty-six million, seven hundred sixteen thousand, five hundred seventy-one".