22355565 has 8 divisors (see below), whose sum is σ = 35768928. Its totient is φ = 11922960.

The previous prime is 22355551. The next prime is 22355587. The reversal of 22355565 is 56555322.

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

It is not a de Polignac number, because 22355565 - 2¹⁴ = 22339181 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745171 + ... + 745200.

It is an arithmetic number, because the mean of its divisors is an integer number (4471116).

Almost surely, 2^22355565 is an apocalyptic number.

It is an amenable number.

22355565 is a deficient number, since it is larger than the sum of its proper divisors (13413363).

22355565 is a wasteful number, since it uses less digits than its factorization.

22355565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490379.

The product of its digits is 45000, while the sum is 33.

The square root of 22355565 is about 4728.1671924753. The cubic root of 22355565 is about 281.7054290378.

The spelling of 22355565 in words is "twenty-two million, three hundred fifty-five thousand, five hundred sixty-five".