2243165 has 4 divisors (see below), whose sum is σ = 2691804. Its totient is φ = 1794528.

The previous prime is 2243161. The next prime is 2243177. The reversal of 2243165 is 5613422.

2243165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5613422 = 2 ⋅2806711.

It can be written as a sum of positive squares in 2 ways, for example, as 550564 + 1692601 = 742^2 + 1301^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243165 - 2² = 2243161 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 2²¹ + 4⁸ + 3⁷ + 1 + 6² + 5⁷ .

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 2243165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243161) 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 3 ways as a sum of consecutive naturals, for example, 224312 + ... + 224321.

It is an arithmetic number, because the mean of its divisors is an integer number (672951).

2^2243165 is an apocalyptic number.

It is an amenable number.

2243165 is a deficient number, since it is larger than the sum of its proper divisors (448639).

2243165 is an equidigital number, since it uses as much as digits as its factorization.

2243165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448638.

The product of its digits is 1440, while the sum is 23.

The square root of 2243165 is about 1497.7199337660. The cubic root of 2243165 is about 130.9042479590.

Adding to 2243165 its reverse (5613422), we get a palindrome (7856587).

The spelling of 2243165 in words is "two million, two hundred forty-three thousand, one hundred sixty-five".