56505 has 8 divisors (see below), whose sum is σ = 90432. Its totient is φ = 30128.

The previous prime is 56503. The next prime is 56509. The reversal of 56505 is 50565.

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

It is a cyclic number.

It is not a de Polignac number, because 56505 - 2¹ = 56503 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a plaindrome in base 6.

It is a nialpdrome in base 16.

It is a zygodrome in base 6.

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, 1869 + ... + 1898.

It is an arithmetic number, because the mean of its divisors is an integer number (11304).

2⁵⁶⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

56505 is a deficient number, since it is larger than the sum of its proper divisors (33927).

56505 is a wasteful number, since it uses less digits than its factorization.

56505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 56505 is about 237.7078038265. The cubic root of 56505 is about 38.3732832825.

Subtracting from 56505 its product of nonzero digits (750), we obtain a palindrome (55755).

It can be divided in two parts, 56 and 505, that added together give a triangular number (561 = T₃₃).

The spelling of 56505 in words is "fifty-six thousand, five hundred five".