22265091 has 16 divisors (see below), whose sum is σ = 33791520. Its totient is φ = 14480640.

The previous prime is 22265077. The next prime is 22265167. The reversal of 22265091 is 19056222.

22265091 is a `hidden beast` number, since 2 + 2 + 2 + 650 + 9 + 1 = 666.

It is not a de Polignac number, because 22265091 - 2¹⁵ = 22232323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (22265051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8950 + ... + 11163.

It is an arithmetic number, because the mean of its divisors is an integer number (2111970).

Almost surely, 2^22265091 is an apocalyptic number.

22265091 is a deficient number, since it is larger than the sum of its proper divisors (11526429).

22265091 is a wasteful number, since it uses less digits than its factorization.

22265091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20163 (or 20157 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 22265091 is about 4718.5899376827. The cubic root of 22265091 is about 281.3248902789.

The spelling of 22265091 in words is "twenty-two million, two hundred sixty-five thousand, ninety-one".