22665155 has 4 divisors (see below), whose sum is σ = 27198192. Its totient is φ = 18132120.

The previous prime is 22665151. The next prime is 22665163. The reversal of 22665155 is 55156622.

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

It is not a de Polignac number, because 22665155 - 2² = 22665151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22665151) 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, 2266511 + ... + 2266520.

It is an arithmetic number, because the mean of its divisors is an integer number (6799548).

Almost surely, 2^22665155 is an apocalyptic number.

22665155 is a deficient number, since it is larger than the sum of its proper divisors (4533037).

22665155 is an equidigital number, since it uses as much as digits as its factorization.

22665155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533036.

The product of its digits is 18000, while the sum is 32.

The square root of 22665155 is about 4760.7935262937. The cubic root of 22665155 is about 282.9998668148. Note that the first 3 decimals are identical.

Adding to 22665155 its sum of digits (32), we get a cube (22665187 = 283³).

The spelling of 22665155 in words is "twenty-two million, six hundred sixty-five thousand, one hundred fifty-five".