22543023 has 4 divisors (see below), whose sum is σ = 30057368. Its totient is φ = 15028680.

The previous prime is 22543019. The next prime is 22543043. The reversal of 22543023 is 32034522.

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

It is not a de Polignac number, because 22543023 - 2² = 22543019 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22543043) 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, 3757168 + ... + 3757173.

It is an arithmetic number, because the mean of its divisors is an integer number (7514342).

Almost surely, 2^22543023 is an apocalyptic number.

22543023 is a deficient number, since it is larger than the sum of its proper divisors (7514345).

22543023 is an equidigital number, since it uses as much as digits as its factorization.

22543023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7514344.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 22543023 is about 4747.9493468233. The cubic root of 22543023 is about 282.4906327330.

Adding to 22543023 its reverse (32034522), we get a palindrome (54577545).

The spelling of 22543023 in words is "twenty-two million, five hundred forty-three thousand, twenty-three".