22255155 has 48 divisors (see below), whose sum is σ = 43112160. Its totient is φ = 10948608.

The previous prime is 22255153. The next prime is 22255157. The reversal of 22255155 is 55155222.

It is an interprime number because it is at equal distance from previous prime (22255153) and next prime (22255157).

It is not a de Polignac number, because 22255155 - 2¹ = 22255153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22255153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15091 + ... + 16499.

It is an arithmetic number, because the mean of its divisors is an integer number (898170).

Almost surely, 2^22255155 is an apocalyptic number.

22255155 is a deficient number, since it is larger than the sum of its proper divisors (20857005).

22255155 is a wasteful number, since it uses less digits than its factorization.

22255155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1430 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 22255155 is about 4717.5369632892. The cubic root of 22255155 is about 281.2830361194.

The spelling of 22255155 in words is "twenty-two million, two hundred fifty-five thousand, one hundred fifty-five".