223556 has 6 divisors (see below), whose sum is σ = 391230. Its totient is φ = 111776.

The previous prime is 223549. The next prime is 223577. The reversal of 223556 is 655322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 217156 + 6400 = 466^2 + 80^2 .

It is a plaindrome in base 10.

It is an unprimeable number.

223556 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27941 + ... + 27948.

It is an arithmetic number, because the mean of its divisors is an integer number (65205).

2²²³⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

223556 is a deficient number, since it is larger than the sum of its proper divisors (167674).

223556 is a wasteful number, since it uses less digits than its factorization.

223556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55893 (or 55891 counting only the distinct ones).

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

The square root of 223556 is about 472.8170893697. The cubic root of 223556 is about 60.6916265420.

Adding to 223556 its reverse (655322), we get a palindrome (878878).

The spelling of 223556 in words is "two hundred twenty-three thousand, five hundred fifty-six".