22855147 has 4 divisors (see below), whose sum is σ = 26120176. Its totient is φ = 19590120.

The previous prime is 22855141. The next prime is 22855181. The reversal of 22855147 is 74155822.

It is a happy number.

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 22855147 - 2³ = 22855139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22855141) by changing a digit.

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, 1632504 + ... + 1632517.

It is an arithmetic number, because the mean of its divisors is an integer number (6530044).

Almost surely, 2^22855147 is an apocalyptic number.

22855147 is a deficient number, since it is larger than the sum of its proper divisors (3265029).

22855147 is an equidigital number, since it uses as much as digits as its factorization.

22855147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265028.

The product of its digits is 22400, while the sum is 34.

The square root of 22855147 is about 4780.7057010446. The cubic root of 22855147 is about 283.7884218965.

The spelling of 22855147 in words is "twenty-two million, eight hundred fifty-five thousand, one hundred forty-seven".