22164558 has 16 divisors (see below), whose sum is σ = 47739216. Its totient is φ = 6819840.

The previous prime is 22164557. The next prime is 22164581. The reversal of 22164558 is 85546122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22164553) 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 7 ways as a sum of consecutive naturals, for example, 142003 + ... + 142158.

It is an arithmetic number, because the mean of its divisors is an integer number (2983701).

Almost surely, 2^22164558 is an apocalyptic number.

22164558 is an abundant number, since it is smaller than the sum of its proper divisors (25574658).

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

22164558 is a wasteful number, since it uses less digits than its factorization.

22164558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284179.

The product of its digits is 19200, while the sum is 33.

The square root of 22164558 is about 4707.9250206434. The cubic root of 22164558 is about 280.9008316790.

It can be divided in two parts, 22164 and 558, that added together give a palindrome (22722).

The spelling of 22164558 in words is "twenty-two million, one hundred sixty-four thousand, five hundred fifty-eight".