565439 has 4 divisors (see below), whose sum is σ = 646224. Its totient is φ = 484656.

The previous prime is 565429. The next prime is 565441. The reversal of 565439 is 934565.

It is a happy number.

565439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 565439 - 2⁸ = 565183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 565439.

It is not an unprimeable number, because it can be changed into a prime (565429) 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, 40382 + ... + 40395.

It is an arithmetic number, because the mean of its divisors is an integer number (161556).

2⁵⁶⁵⁴³⁹ is an apocalyptic number.

565439 is a deficient number, since it is larger than the sum of its proper divisors (80785).

565439 is an equidigital number, since it uses as much as digits as its factorization.

565439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80784.

The product of its digits is 16200, while the sum is 32.

The square root of 565439 is about 751.9567806729. The cubic root of 565439 is about 82.6916999137.

The spelling of 565439 in words is "five hundred sixty-five thousand, four hundred thirty-nine".