22276855 has 4 divisors (see below), whose sum is σ = 26732232. Its totient is φ = 17821480.

The previous prime is 22276847. The next prime is 22276867. The reversal of 22276855 is 55867222.

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

It is not a de Polignac number, because 22276855 - 2³ = 22276847 is a prime.

It is a Duffinian number.

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, 2227681 + ... + 2227690.

It is an arithmetic number, because the mean of its divisors is an integer number (6683058).

Almost surely, 2^22276855 is an apocalyptic number.

22276855 is a deficient number, since it is larger than the sum of its proper divisors (4455377).

22276855 is an equidigital number, since it uses as much as digits as its factorization.

22276855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455376.

The product of its digits is 67200, while the sum is 37.

The square root of 22276855 is about 4719.8363319081. The cubic root of 22276855 is about 281.3744285645.

It can be divided in two parts, 222 and 76855, that added together give a palindrome (77077).

The spelling of 22276855 in words is "twenty-two million, two hundred seventy-six thousand, eight hundred fifty-five".