22957219 has 4 divisors (see below), whose sum is σ = 23233896. Its totient is φ = 22680544.

The previous prime is 22957217. The next prime is 22957247. The reversal of 22957219 is 91275922.

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

It is a cyclic number.

It is not a de Polignac number, because 22957219 - 2¹ = 22957217 is a prime.

It is a super-2 number, since 2×22957219² = 1054067808427922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22957217) 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, 138214 + ... + 138379.

It is an arithmetic number, because the mean of its divisors is an integer number (5808474).

Almost surely, 2^22957219 is an apocalyptic number.

22957219 is a deficient number, since it is larger than the sum of its proper divisors (276677).

22957219 is an equidigital number, since it uses as much as digits as its factorization.

22957219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276676.

The product of its digits is 22680, while the sum is 37.

The square root of 22957219 is about 4791.3692197534. The cubic root of 22957219 is about 284.2102646744.

The spelling of 22957219 in words is "twenty-two million, nine hundred fifty-seven thousand, two hundred nineteen".