565243 has 4 divisors (see below), whose sum is σ = 646000. Its totient is φ = 484488.

The previous prime is 565241. The next prime is 565247. The reversal of 565243 is 342565.

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 565243 - 2¹ = 565241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565241) 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, 40368 + ... + 40381.

It is an arithmetic number, because the mean of its divisors is an integer number (161500).

2⁵⁶⁵²⁴³ is an apocalyptic number.

565243 is a deficient number, since it is larger than the sum of its proper divisors (80757).

565243 is an equidigital number, since it uses as much as digits as its factorization.

565243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80756.

The product of its digits is 3600, while the sum is 25.

The square root of 565243 is about 751.8264427379. The cubic root of 565243 is about 82.6821442433.

It can be divided in two parts, 565 and 243, that added together give a palindrome (808).

The spelling of 565243 in words is "five hundred sixty-five thousand, two hundred forty-three".