556222223 has 4 divisors (see below), whose sum is σ = 557037288. Its totient is φ = 555407160.

The previous prime is 556222213. The next prime is 556222237. The reversal of 556222223 is 322222655.

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 556222223 - 2⁶ = 556222159 is a prime.

It is a super-2 number, since 2×556222223² = 618766322718123458, 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 (556222213) 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, 406508 + ... + 407873.

It is an arithmetic number, because the mean of its divisors is an integer number (139259322).

Almost surely, 2^556222223 is an apocalyptic number.

556222223 is a deficient number, since it is larger than the sum of its proper divisors (815065).

556222223 is an equidigital number, since it uses as much as digits as its factorization.

556222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815064.

The product of its digits is 14400, while the sum is 29.

The square root of 556222223 is about 23584.3639515676. The cubic root of 556222223 is about 822.3993886597.

Adding to 556222223 its reverse (322222655), we get a palindrome (878444878).

The spelling of 556222223 in words is "five hundred fifty-six million, two hundred twenty-two thousand, two hundred twenty-three".