222945 has 16 divisors (see below), whose sum is σ = 362880. Its totient is φ = 116864.

The previous prime is 222941. The next prime is 222947. The reversal of 222945 is 549222.

It is a cyclic number.

It is not a de Polignac number, because 222945 - 2² = 222941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1252 + ... + 1418.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2²²²⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

222945 is a deficient number, since it is larger than the sum of its proper divisors (139935).

222945 is a wasteful number, since it uses less digits than its factorization.

222945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its digits is 1440, while the sum is 24.

The square root of 222945 is about 472.1705200455. The cubic root of 222945 is about 60.6362840795.

The spelling of 222945 in words is "two hundred twenty-two thousand, nine hundred forty-five".