22166459 has 4 divisors (see below), whose sum is σ = 25333104. Its totient is φ = 18999816.

The previous prime is 22166447. The next prime is 22166461. The reversal of 22166459 is 95466122.

It is a happy number.

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 22166459 - 2²⁴ = 5389243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22166489) 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, 1583312 + ... + 1583325.

It is an arithmetic number, because the mean of its divisors is an integer number (6333276).

Almost surely, 2^22166459 is an apocalyptic number.

22166459 is a deficient number, since it is larger than the sum of its proper divisors (3166645).

22166459 is an equidigital number, since it uses as much as digits as its factorization.

22166459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166644.

The product of its digits is 25920, while the sum is 35.

The square root of 22166459 is about 4708.1269099293. The cubic root of 22166459 is about 280.9088621755.

The spelling of 22166459 in words is "twenty-two million, one hundred sixty-six thousand, four hundred fifty-nine".