222458 has 4 divisors (see below), whose sum is σ = 333690. Its totient is φ = 111228.

The previous prime is 222437. The next prime is 222461. The reversal of 222458 is 854222.

222458 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 187489 + 34969 = 433^2 + 187^2 .

It is a plaindrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55613 + ... + 55616.

2²²²⁴⁵⁸ is an apocalyptic number.

222458 is a deficient number, since it is larger than the sum of its proper divisors (111232).

222458 is a wasteful number, since it uses less digits than its factorization.

222458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111231.

The product of its digits is 1280, while the sum is 23.

The square root of 222458 is about 471.6545345907. The cubic root of 222458 is about 60.5921006888.

The spelling of 222458 in words is "two hundred twenty-two thousand, four hundred fifty-eight".