22955209 has 2 divisors, whose sum is σ = 22955210. Its totient is φ = 22955208.

The previous prime is 22955183. The next prime is 22955213. The reversal of 22955209 is 90255922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17665209 + 5290000 = 4203^2 + 2300^2 .

It is a cyclic number.

It is not a de Polignac number, because 22955209 - 2¹⁹ = 22430921 is a prime.

It is not a weakly prime, because it can be changed into another prime (22955239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11477604 + 11477605.

It is an arithmetic number, because the mean of its divisors is an integer number (11477605).

Almost surely, 2^22955209 is an apocalyptic number.

It is an amenable number.

22955209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22955209 is an equidigital number, since it uses as much as digits as its factorization.

22955209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 22955209 is about 4791.1594630110. The cubic root of 22955209 is about 284.2019698354.

The spelling of 22955209 in words is "twenty-two million, nine hundred fifty-five thousand, two hundred nine".