22285855 has 4 divisors (see below), whose sum is σ = 26743032. Its totient is φ = 17828680.

The previous prime is 22285819. The next prime is 22285859. The reversal of 22285855 is 55858222.

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

It is not a de Polignac number, because 22285855 - 2⁹ = 22285343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22285859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2228581 + ... + 2228590.

It is an arithmetic number, because the mean of its divisors is an integer number (6685758).

Almost surely, 2^22285855 is an apocalyptic number.

22285855 is a deficient number, since it is larger than the sum of its proper divisors (4457177).

22285855 is an equidigital number, since it uses as much as digits as its factorization.

22285855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457176.

The product of its digits is 64000, while the sum is 37.

The square root of 22285855 is about 4720.7896585211. The cubic root of 22285855 is about 281.4123158531.

The spelling of 22285855 in words is "twenty-two million, two hundred eighty-five thousand, eight hundred fifty-five".