22530223 has 2 divisors, whose sum is σ = 22530224. Its totient is φ = 22530222.

The previous prime is 22530203. The next prime is 22530227. The reversal of 22530223 is 32203522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22530223 - 2²¹ = 20433071 is a prime.

It is a super-2 number, since 2×22530223² = 1015221896859458, which contains 22 as substring.

It is equal to p_1420435 and since 22530223 and 1420435 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22530223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22530227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11265111 + 11265112.

It is an arithmetic number, because the mean of its divisors is an integer number (11265112).

Almost surely, 2^22530223 is an apocalyptic number.

22530223 is a deficient number, since it is larger than the sum of its proper divisors (1).

22530223 is an equidigital number, since it uses as much as digits as its factorization.

22530223 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22530223 is about 4746.6012050730. The cubic root of 22530223 is about 282.4371562511.

Adding to 22530223 its reverse (32203522), we get a palindrome (54733745).

The spelling of 22530223 in words is "twenty-two million, five hundred thirty thousand, two hundred twenty-three".