22255855 has 8 divisors (see below), whose sum is σ = 26972064. Its totient is φ = 17628000.

The previous prime is 22255853. The next prime is 22255889. The reversal of 22255855 is 55855222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22255855 - 2¹ = 22255853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22255855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22255853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21531 + ... + 22540.

It is an arithmetic number, because the mean of its divisors is an integer number (3371508).

Almost surely, 2^22255855 is an apocalyptic number.

22255855 is a deficient number, since it is larger than the sum of its proper divisors (4716209).

22255855 is a wasteful number, since it uses less digits than its factorization.

22255855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44177.

The product of its digits is 40000, while the sum is 34.

The square root of 22255855 is about 4717.6111539634. The cubic root of 22255855 is about 281.2859851898.

The spelling of 22255855 in words is "twenty-two million, two hundred fifty-five thousand, eight hundred fifty-five".