56571 has 8 divisors (see below), whose sum is σ = 76560. Its totient is φ = 37152.

The previous prime is 56569. The next prime is 56591. The reversal of 56571 is 17565.

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

It is not a de Polignac number, because 56571 - 2¹ = 56569 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (56501) 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, 241 + ... + 413.

It is an arithmetic number, because the mean of its divisors is an integer number (9570).

2⁵⁶⁵⁷¹ is an apocalyptic number.

56571 is a deficient number, since it is larger than the sum of its proper divisors (19989).

56571 is a wasteful number, since it uses less digits than its factorization.

56571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its digits is 1050, while the sum is 24.

The square root of 56571 is about 237.8465892125. The cubic root of 56571 is about 38.3882179565.

Multiplying 56571 by its product of digits (1050), we get a triangular number (59399550 = T₁₀₈₉₉).

It can be divided in two parts, 565 and 71, that added together give a palindrome (636).

The spelling of 56571 in words is "fifty-six thousand, five hundred seventy-one".