22555559 has 4 divisors (see below), whose sum is σ = 24290616. Its totient is φ = 20820504.

The previous prime is 22555553. The next prime is 22555573. The reversal of 22555559 is 95555522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22555559 - 2²⁰ = 21506983 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22555553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867509 + ... + 867534.

It is an arithmetic number, because the mean of its divisors is an integer number (6072654).

Almost surely, 2^22555559 is an apocalyptic number.

22555559 is a deficient number, since it is larger than the sum of its proper divisors (1735057).

22555559 is a wasteful number, since it uses less digits than its factorization.

22555559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735056.

The product of its digits is 112500, while the sum is 38.

The square root of 22555559 is about 4749.2693122206. The cubic root of 22555559 is about 282.5429866452.

The spelling of 22555559 in words is "twenty-two million, five hundred fifty-five thousand, five hundred fifty-nine".