22105450 has 12 divisors (see below), whose sum is σ = 41116230. Its totient is φ = 8842160.

The previous prime is 22105441. The next prime is 22105459. The reversal of 22105450 is 5450122.

It is an interprime number because it is at equal distance from previous prime (22105441) and next prime (22105459).

It can be written as a sum of positive squares in 3 ways, for example, as 16966161 + 5139289 = 4119^2 + 2267^2 .

It is not an unprimeable number, because it can be changed into a prime (22105459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221005 + ... + 221104.

Almost surely, 2^22105450 is an apocalyptic number.

22105450 is a deficient number, since it is larger than the sum of its proper divisors (19010780).

22105450 is a wasteful number, since it uses less digits than its factorization.

22105450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442121 (or 442116 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 22105450 is about 4701.6433297306. The cubic root of 22105450 is about 280.6509091443.

Adding to 22105450 its reverse (5450122), we get a palindrome (27555572).

The spelling of 22105450 in words is "twenty-two million, one hundred five thousand, four hundred fifty".