22355091 has 12 divisors (see below), whose sum is σ = 35226360. Its totient is φ = 13548480.

The previous prime is 22355089. The next prime is 22355101. The reversal of 22355091 is 19055322.

22355091 is a `hidden beast` number, since 2 + 23 + 550 + 91 = 666.

It is not a de Polignac number, because 22355091 - 2¹ = 22355089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22355891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112806 + ... + 113003.

It is an arithmetic number, because the mean of its divisors is an integer number (2935530).

Almost surely, 2^22355091 is an apocalyptic number.

22355091 is a deficient number, since it is larger than the sum of its proper divisors (12871269).

22355091 is a wasteful number, since it uses less digits than its factorization.

22355091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225826 (or 225823 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 22355091 is about 4728.1170670786. The cubic root of 22355091 is about 281.7034380448.

The spelling of 22355091 in words is "twenty-two million, three hundred fifty-five thousand, ninety-one".