223172 has 6 divisors (see below), whose sum is σ = 390558. Its totient is φ = 111584.

The previous prime is 223151. The next prime is 223207. The reversal of 223172 is 271322.

It can be written as a sum of positive squares in only one way, i.e., 141376 + 81796 = 376^2 + 286^2 .

It is a super-3 number, since 3×223172³ = 33345740882353344, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223172.

It is an unprimeable number.

223172 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, 27893 + ... + 27900.

It is an arithmetic number, because the mean of its divisors is an integer number (65093).

2²²³¹⁷² is an apocalyptic number.

It is an amenable number.

223172 is a deficient number, since it is larger than the sum of its proper divisors (167386).

223172 is a wasteful number, since it uses less digits than its factorization.

223172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55797 (or 55795 counting only the distinct ones).

The product of its digits is 168, while the sum is 17.

The square root of 223172 is about 472.4108381483. The cubic root of 223172 is about 60.6568568179.

Adding to 223172 its reverse (271322), we get a palindrome (494494).

The spelling of 223172 in words is "two hundred twenty-three thousand, one hundred seventy-two", and thus it is an iban number.