22550985 has 12 divisors (see below), whose sum is σ = 39088452. Its totient is φ = 12027168.

The previous prime is 22550903. The next prime is 22550987. The reversal of 22550985 is 58905522.

22550985 is a `hidden beast` number, since 22 + 550 + 9 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5212089 + 17338896 = 2283^2 + 4164^2 .

It is not a de Polignac number, because 22550985 - 2¹⁴ = 22534601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22550987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250522 + ... + 250611.

It is an arithmetic number, because the mean of its divisors is an integer number (3257371).

Almost surely, 2^22550985 is an apocalyptic number.

It is an amenable number.

22550985 is a deficient number, since it is larger than the sum of its proper divisors (16537467).

22550985 is a wasteful number, since it uses less digits than its factorization.

22550985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501144 (or 501141 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 22550985 is about 4748.7877400448. The cubic root of 22550985 is about 282.5238865646.

The spelling of 22550985 in words is "twenty-two million, five hundred fifty thousand, nine hundred eighty-five".