22155365 has 8 divisors (see below), whose sum is σ = 26620440. Its totient is φ = 17701632.

The previous prime is 22155361. The next prime is 22155373. The reversal of 22155365 is 56355122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1643524 + 20511841 = 1282^2 + 4529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22155365 - 2² = 22155361 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321 + ... + 7049.

It is an arithmetic number, because the mean of its divisors is an integer number (3327555).

Almost surely, 2^22155365 is an apocalyptic number.

It is an amenable number.

22155365 is a deficient number, since it is larger than the sum of its proper divisors (4465075).

22155365 is an equidigital number, since it uses as much as digits as its factorization.

22155365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671.

The product of its digits is 9000, while the sum is 29.

The square root of 22155365 is about 4706.9485869298. The cubic root of 22155365 is about 280.8619907143.

The spelling of 22155365 in words is "twenty-two million, one hundred fifty-five thousand, three hundred sixty-five".