22087105 has 4 divisors (see below), whose sum is σ = 26504532. Its totient is φ = 17669680.

The previous prime is 22087103. The next prime is 22087111. The reversal of 22087105 is 50178022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2876416 + 19210689 = 1696^2 + 4383^2 .

It is not a de Polignac number, because 22087105 - 2¹ = 22087103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22087105.

It is not an unprimeable number, because it can be changed into a prime (22087103) 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, 2208706 + ... + 2208715.

It is an arithmetic number, because the mean of its divisors is an integer number (6626133).

Almost surely, 2^22087105 is an apocalyptic number.

It is an amenable number.

22087105 is a deficient number, since it is larger than the sum of its proper divisors (4417427).

22087105 is an equidigital number, since it uses as much as digits as its factorization.

22087105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4417426.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 22087105 is about 4699.6920111854. The cubic root of 22087105 is about 280.5732515860.

The spelling of 22087105 in words is "twenty-two million, eighty-seven thousand, one hundred five".