22543523 has 2 divisors, whose sum is σ = 22543524. Its totient is φ = 22543522.

The previous prime is 22543517. The next prime is 22543529. The reversal of 22543523 is 32534522.

It is a balanced prime because it is at equal distance from previous prime (22543517) and next prime (22543529).

It is a cyclic number.

It is not a de Polignac number, because 22543523 - 2⁸ = 22543267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22543492 and 22543501.

It is not a weakly prime, because it can be changed into another prime (22543529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11271761 + 11271762.

It is an arithmetic number, because the mean of its divisors is an integer number (11271762).

Almost surely, 2^22543523 is an apocalyptic number.

22543523 is a deficient number, since it is larger than the sum of its proper divisors (1).

22543523 is an equidigital number, since it uses as much as digits as its factorization.

22543523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 26.

The square root of 22543523 is about 4748.0020008420. The cubic root of 22543523 is about 282.4927212472.

Subtracting 22543523 from its reverse (32534522), we obtain a palindrome (9990999).

The spelling of 22543523 in words is "twenty-two million, five hundred forty-three thousand, five hundred twenty-three".