56845 has 4 divisors (see below), whose sum is σ = 68220. Its totient is φ = 45472.

The previous prime is 56843. The next prime is 56857. The reversal of 56845 is 54865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54865 = 5 ⋅10973.

It can be written as a sum of positive squares in 2 ways, for example, as 26569 + 30276 = 163^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 56845 - 2¹ = 56843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56843) 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, 5680 + ... + 5689.

It is an arithmetic number, because the mean of its divisors is an integer number (17055).

2⁵⁶⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

56845 is a deficient number, since it is larger than the sum of its proper divisors (11375).

56845 is a wasteful number, since it uses less digits than its factorization.

56845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11374.

The product of its digits is 4800, while the sum is 28.

The square root of 56845 is about 238.4218949677. The cubic root of 56845 is about 38.4500955703.

It can be divided in two parts, 5 and 6845, that multiplied together give a square (34225 = 185²).

The spelling of 56845 in words is "fifty-six thousand, eight hundred forty-five".