22805117 has 4 divisors (see below), whose sum is σ = 22886556. Its totient is φ = 22723680.

The previous prime is 22805087. The next prime is 22805131. The reversal of 22805117 is 71150822.

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 11689561 + 11115556 = 3419^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 22805117 - 2⁶ = 22805053 is a prime.

It is a super-2 number, since 2×22805117² = 1040146722767378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22805417) 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, 40298 + ... + 40859.

It is an arithmetic number, because the mean of its divisors is an integer number (5721639).

Almost surely, 2^22805117 is an apocalyptic number.

It is an amenable number.

22805117 is a deficient number, since it is larger than the sum of its proper divisors (81439).

22805117 is an equidigital number, since it uses as much as digits as its factorization.

22805117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81438.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 22805117 is about 4775.4703433275. The cubic root of 22805117 is about 283.5811993229.

Adding to 22805117 its reverse (71150822), we get a palindrome (93955939).

It can be divided in two parts, 22805 and 117, that added together give a palindrome (22922).

The spelling of 22805117 in words is "twenty-two million, eight hundred five thousand, one hundred seventeen".