22537523 has 2 divisors, whose sum is σ = 22537524. Its totient is φ = 22537522.

The previous prime is 22537499. The next prime is 22537531. The reversal of 22537523 is 32573522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22537523 - 2²⁰ = 21488947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22537573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11268761 + 11268762.

It is an arithmetic number, because the mean of its divisors is an integer number (11268762).

Almost surely, 2^22537523 is an apocalyptic number.

22537523 is a deficient number, since it is larger than the sum of its proper divisors (1).

22537523 is an equidigital number, since it uses as much as digits as its factorization.

22537523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 29.

The square root of 22537523 is about 4747.3701140737. The cubic root of 22537523 is about 282.4676570381.

The spelling of 22537523 in words is "twenty-two million, five hundred thirty-seven thousand, five hundred twenty-three".