556223 has 4 divisors (see below), whose sum is σ = 588960. Its totient is φ = 523488.

The previous prime is 556219. The next prime is 556229. The reversal of 556223 is 322655.

It is a happy number.

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 556223 - 2² = 556219 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 556223.

It is not an unprimeable number, because it can be changed into a prime (556229) 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, 16343 + ... + 16376.

It is an arithmetic number, because the mean of its divisors is an integer number (147240).

2⁵⁵⁶²²³ is an apocalyptic number.

556223 is a deficient number, since it is larger than the sum of its proper divisors (32737).

556223 is a wasteful number, since it uses less digits than its factorization.

556223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32736.

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

The square root of 556223 is about 745.8035934480. The cubic root of 556223 is about 82.2399771603.

Adding to 556223 its reverse (322655), we get a palindrome (878878).

The spelling of 556223 in words is "five hundred fifty-six thousand, two hundred twenty-three".