22200055 has 4 divisors (see below), whose sum is σ = 26640072. Its totient is φ = 17760040.

The previous prime is 22200047. The next prime is 22200077. The reversal of 22200055 is 55000222.

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

It is not a de Polignac number, because 22200055 - 2³ = 22200047 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2220001 + ... + 2220010.

It is an arithmetic number, because the mean of its divisors is an integer number (6660018).

Almost surely, 2^22200055 is an apocalyptic number.

22200055 is a deficient number, since it is larger than the sum of its proper divisors (4440017).

22200055 is an equidigital number, since it uses as much as digits as its factorization.

22200055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440016.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 22200055 is about 4711.6934323022. The cubic root of 22200055 is about 281.0507078696.

Adding to 22200055 its reverse (55000222), we get a palindrome (77200277).

The spelling of 22200055 in words is "twenty-two million, two hundred thousand, fifty-five".