22305223 has 4 divisors (see below), whose sum is σ = 22610848. Its totient is φ = 21999600.

The previous prime is 22305187. The next prime is 22305251. The reversal of 22305223 is 32250322.

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 22305223 - 2¹⁷ = 22174151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22305223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22305623) 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, 152703 + ... + 152848.

It is an arithmetic number, because the mean of its divisors is an integer number (5652712).

Almost surely, 2^22305223 is an apocalyptic number.

22305223 is a deficient number, since it is larger than the sum of its proper divisors (305625).

22305223 is an equidigital number, since it uses as much as digits as its factorization.

22305223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305624.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 22305223 is about 4722.8405647449. The cubic root of 22305223 is about 281.4938147167.

Adding to 22305223 its reverse (32250322), we get a palindrome (54555545).

The spelling of 22305223 in words is "twenty-two million, three hundred five thousand, two hundred twenty-three".