22555579 has 2 divisors, whose sum is σ = 22555580. Its totient is φ = 22555578.

The previous prime is 22555573. The next prime is 22555619. The reversal of 22555579 is 97555522.

It is an a-pointer prime, because the next prime (22555619) can be obtained adding 22555579 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22555579 - 2¹⁵ = 22522811 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (22555573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277789 + 11277790.

It is an arithmetic number, because the mean of its divisors is an integer number (11277790).

Almost surely, 2^22555579 is an apocalyptic number.

22555579 is a deficient number, since it is larger than the sum of its proper divisors (1).

22555579 is an equidigital number, since it uses as much as digits as its factorization.

22555579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 40.

The square root of 22555579 is about 4749.2714178072. The cubic root of 22555579 is about 282.5430701554.

The spelling of 22555579 in words is "twenty-two million, five hundred fifty-five thousand, five hundred seventy-nine".