22555911 has 16 divisors (see below), whose sum is σ = 35103744. Its totient is φ = 12614304.

The previous prime is 22555901. The next prime is 22555931. The reversal of 22555911 is 11955522.

It is not a de Polignac number, because 22555911 - 2⁹ = 22555399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22555901) 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 15 ways as a sum of consecutive naturals, for example, 10440 + ... + 12413.

It is an arithmetic number, because the mean of its divisors is an integer number (2193984).

Almost surely, 2^22555911 is an apocalyptic number.

22555911 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22555911 is a deficient number, since it is larger than the sum of its proper divisors (12547833).

22555911 is a wasteful number, since it uses less digits than its factorization.

22555911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22910.

The product of its digits is 4500, while the sum is 30.

The square root of 22555911 is about 4749.3063704082. The cubic root of 22555911 is about 282.5444564176.

The spelling of 22555911 in words is "twenty-two million, five hundred fifty-five thousand, nine hundred eleven".