565231 has 8 divisors (see below), whose sum is σ = 604800. Its totient is φ = 526680.

The previous prime is 565207. The next prime is 565237. The reversal of 565231 is 132565.

It is a happy number.

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

It is not a de Polignac number, because 565231 - 2¹¹ = 563183 is a prime.

It is a super-2 number, since 2×565231² = 638972166722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565237) 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, 1140 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2⁵⁶⁵²³¹ is an apocalyptic number.

565231 is a deficient number, since it is larger than the sum of its proper divisors (39569).

565231 is a wasteful number, since it uses less digits than its factorization.

565231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its digits is 900, while the sum is 22.

The square root of 565231 is about 751.8184621303. The cubic root of 565231 is about 82.6815591305.

Adding to 565231 its reverse (132565), we get a palindrome (697796).

The spelling of 565231 in words is "five hundred sixty-five thousand, two hundred thirty-one".