22537573 has 2 divisors, whose sum is σ = 22537574. Its totient is φ = 22537572.

The previous prime is 22537531. The next prime is 22537607. The reversal of 22537573 is 37573522.

It is an a-pointer prime, because the next prime (22537607) can be obtained adding 22537573 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17164449 + 5373124 = 4143^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 22537573 - 2⁹ = 22537061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22537523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11268786 + 11268787.

It is an arithmetic number, because the mean of its divisors is an integer number (11268787).

Almost surely, 2^22537573 is an apocalyptic number.

It is an amenable number.

22537573 is a deficient number, since it is larger than the sum of its proper divisors (1).

22537573 is an equidigital number, since it uses as much as digits as its factorization.

22537573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44100, while the sum is 34.

The square root of 22537573 is about 4747.3753801443. The cubic root of 22537573 is about 282.4678659249.

The spelling of 22537573 in words is "twenty-two million, five hundred thirty-seven thousand, five hundred seventy-three".