56766571 has 4 divisors (see below), whose sum is σ = 57016872. Its totient is φ = 56516272.

The previous prime is 56766569. The next prime is 56766583. The reversal of 56766571 is 17566765.

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 56766571 - 2¹ = 56766569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56766371) 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, 124810 + ... + 125263.

It is an arithmetic number, because the mean of its divisors is an integer number (14254218).

Almost surely, 2^56766571 is an apocalyptic number.

56766571 is a deficient number, since it is larger than the sum of its proper divisors (250301).

56766571 is a wasteful number, since it uses less digits than its factorization.

56766571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250300.

The product of its digits is 264600, while the sum is 43.

The square root of 56766571 is about 7534.3593622816. The cubic root of 56766571 is about 384.3240424306.

The spelling of 56766571 in words is "fifty-six million, seven hundred sixty-six thousand, five hundred seventy-one".