56305 has 4 divisors (see below), whose sum is σ = 67572. Its totient is φ = 45040.

The previous prime is 56299. The next prime is 56311. The reversal of 56305 is 50365.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (56299) and next prime (56311).

It can be written as a sum of positive squares in 2 ways, for example, as 42849 + 13456 = 207^2 + 116^2 .

It is not a de Polignac number, because 56305 - 2⁹ = 55793 is a prime.

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

It is a Duffinian number.

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5626 + ... + 5635.

It is an arithmetic number, because the mean of its divisors is an integer number (16893).

2⁵⁶³⁰⁵ is an apocalyptic number.

It is an amenable number.

56305 is a deficient number, since it is larger than the sum of its proper divisors (11267).

56305 is a wasteful number, since it uses less digits than its factorization.

56305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11266.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 56305 is about 237.2867463640. The cubic root of 56305 is about 38.3279555573.

Subtracting from 56305 its product of nonzero digits (450), we obtain a palindrome (55855).

It can be divided in two parts, 56 and 305, that added together give a square (361 = 19²).

The spelling of 56305 in words is "fifty-six thousand, three hundred five".