222558 has 24 divisors (see below), whose sum is σ = 518472. Its totient is φ = 63504.

The previous prime is 222557. The next prime is 222587. The reversal of 222558 is 855222.

It is a d-powerful number, because it can be written as 2² + 2⁸ + 5⁷ + 2¹⁶ + 5⁷ + 8³ .

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222553) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 85 + ... + 672.

It is an arithmetic number, because the mean of its divisors is an integer number (21603).

2²²²⁵⁵⁸ is an apocalyptic number.

222558 is an abundant number, since it is smaller than the sum of its proper divisors (295914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222558 is a wasteful number, since it uses less digits than its factorization.

222558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776 (or 769 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 222558 is about 471.7605324738. The cubic root of 222558 is about 60.6011785108.

It can be divided in two parts, 222 and 558, that added together give a triangular number (780 = T₃₉).

The spelling of 222558 in words is "two hundred twenty-two thousand, five hundred fifty-eight".