22536223 has 4 divisors (see below), whose sum is σ = 23722360. Its totient is φ = 21350088.

The previous prime is 22536193. The next prime is 22536259. The reversal of 22536223 is 32263522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32263522 = 2 ⋅16131761.

It is a cyclic number.

It is not a de Polignac number, because 22536223 - 2¹³ = 22528031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22536263) 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, 593040 + ... + 593077.

It is an arithmetic number, because the mean of its divisors is an integer number (5930590).

Almost surely, 2^22536223 is an apocalyptic number.

22536223 is a deficient number, since it is larger than the sum of its proper divisors (1186137).

22536223 is a wasteful number, since it uses less digits than its factorization.

22536223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186136.

The product of its digits is 4320, while the sum is 25.

The square root of 22536223 is about 4747.2331941880. The cubic root of 22536223 is about 282.4622258732.

Adding to 22536223 its reverse (32263522), we get a palindrome (54799745).

The spelling of 22536223 in words is "twenty-two million, five hundred thirty-six thousand, two hundred twenty-three".