565023 has 8 divisors (see below), whose sum is σ = 759808. Its totient is φ = 373464.

The previous prime is 565013. The next prime is 565039. The reversal of 565023 is 320565.

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

It is not a de Polignac number, because 565023 - 2⁶ = 564959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565013) 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, 361 + ... + 1122.

It is an arithmetic number, because the mean of its divisors is an integer number (94976).

2⁵⁶⁵⁰²³ is an apocalyptic number.

565023 is a deficient number, since it is larger than the sum of its proper divisors (194785).

565023 is a wasteful number, since it uses less digits than its factorization.

565023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 565023 is about 751.6801181354. The cubic root of 565023 is about 82.6714158591.

Adding to 565023 its reverse (320565), we get a palindrome (885588).

The spelling of 565023 in words is "five hundred sixty-five thousand, twenty-three".