22555529 has 2 divisors, whose sum is σ = 22555530. Its totient is φ = 22555528.

The previous prime is 22555487. The next prime is 22555531. The reversal of 22555529 is 92555522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 4194304 = 4285^2 + 2048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22555529 is a prime.

Together with 22555531, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22555579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277764 + 11277765.

It is an arithmetic number, because the mean of its divisors is an integer number (11277765).

Almost surely, 2^22555529 is an apocalyptic number.

It is an amenable number.

22555529 is a deficient number, since it is larger than the sum of its proper divisors (1).

22555529 is an equidigital number, since it uses as much as digits as its factorization.

22555529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45000, while the sum is 35.

The square root of 22555529 is about 4749.2661538389. The cubic root of 22555529 is about 282.5428613798.

The spelling of 22555529 in words is "twenty-two million, five hundred fifty-five thousand, five hundred twenty-nine".