22258109 has 4 divisors (see below), whose sum is σ = 23025660. Its totient is φ = 21490560.

The previous prime is 22258097. The next prime is 22258123. The reversal of 22258109 is 90185222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16240900 + 6017209 = 4030^2 + 2453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22258109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 767521 = 22258109 / (2 + 2 + 2 + 5 + 8 + 1 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22258169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383732 + ... + 383789.

It is an arithmetic number, because the mean of its divisors is an integer number (5756415).

Almost surely, 2^22258109 is an apocalyptic number.

22258109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22258109 is a deficient number, since it is larger than the sum of its proper divisors (767551).

22258109 is an equidigital number, since it uses as much as digits as its factorization.

22258109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767550.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 22258109 is about 4717.8500400076. The cubic root of 22258109 is about 281.2954807766.

The spelling of 22258109 in words is "twenty-two million, two hundred fifty-eight thousand, one hundred nine".