22261089 has 4 divisors (see below), whose sum is σ = 29681456. Its totient is φ = 14840724.

The previous prime is 22261061. The next prime is 22261093. The reversal of 22261089 is 98016222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-22261089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22261189) 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 3 ways as a sum of consecutive naturals, for example, 3710179 + ... + 3710184.

It is an arithmetic number, because the mean of its divisors is an integer number (7420364).

Almost surely, 2^22261089 is an apocalyptic number.

It is an amenable number.

22261089 is a deficient number, since it is larger than the sum of its proper divisors (7420367).

22261089 is an equidigital number, since it uses as much as digits as its factorization.

22261089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420366.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 22261089 is about 4718.1658512604. The cubic root of 22261089 is about 281.3080338515.

The spelling of 22261089 in words is "twenty-two million, two hundred sixty-one thousand, eighty-nine".