565223 has 4 divisors (see below), whose sum is σ = 583488. Its totient is φ = 546960.

The previous prime is 565207. The next prime is 565237. The reversal of 565223 is 322565.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322565 = 5 ⋅64513.

It is a cyclic number.

It is not a de Polignac number, because 565223 - 2⁴ = 565207 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9086 + ... + 9147.

It is an arithmetic number, because the mean of its divisors is an integer number (145872).

2⁵⁶⁵²²³ is an apocalyptic number.

565223 is a deficient number, since it is larger than the sum of its proper divisors (18265).

565223 is a wasteful number, since it uses less digits than its factorization.

565223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18264.

The product of its digits is 1800, while the sum is 23.

The square root of 565223 is about 751.8131416782. The cubic root of 565223 is about 82.6811690507.

Adding to 565223 its reverse (322565), we get a palindrome (887788).

The spelling of 565223 in words is "five hundred sixty-five thousand, two hundred twenty-three".