222917 has 4 divisors (see below), whose sum is σ = 228396. Its totient is φ = 217440.

The previous prime is 222913. The next prime is 222919. The reversal of 222917 is 719222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58081 + 164836 = 241^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 222917 - 2² = 222913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222892 and 222901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222913) 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, 2678 + ... + 2759.

It is an arithmetic number, because the mean of its divisors is an integer number (57099).

2²²²⁹¹⁷ is an apocalyptic number.

It is an amenable number.

222917 is a deficient number, since it is larger than the sum of its proper divisors (5479).

222917 is an equidigital number, since it uses as much as digits as its factorization.

222917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478.

The product of its digits is 504, while the sum is 23.

The square root of 222917 is about 472.1408688093. The cubic root of 222917 is about 60.6337455056.

The spelling of 222917 in words is "two hundred twenty-two thousand, nine hundred seventeen".