22165243 has 4 divisors (see below), whose sum is σ = 22191120. Its totient is φ = 22139368.

The previous prime is 22165237. The next prime is 22165249. The reversal of 22165243 is 34256122.

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

It is an interprime number because it is at equal distance from previous prime (22165237) and next prime (22165249).

It is a cyclic number.

It is not a de Polignac number, because 22165243 - 2⁵ = 22165211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22165249) 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, 11608 + ... + 13381.

It is an arithmetic number, because the mean of its divisors is an integer number (5547780).

Almost surely, 2^22165243 is an apocalyptic number.

22165243 is a deficient number, since it is larger than the sum of its proper divisors (25877).

22165243 is an equidigital number, since it uses as much as digits as its factorization.

22165243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25876.

The product of its digits is 2880, while the sum is 25.

The square root of 22165243 is about 4707.9977697531. The cubic root of 22165243 is about 280.9037254142.

The spelling of 22165243 in words is "twenty-two million, one hundred sixty-five thousand, two hundred forty-three".