2165223 has 8 divisors (see below), whose sum is σ = 2910208. Its totient is φ = 1431864.

The previous prime is 2165213. The next prime is 2165231. The reversal of 2165223 is 3225612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2165223 - 2⁶ = 2165159 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 6 + 5⁹ + 2¹¹ + 2¹⁵ + 3¹¹ .

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 2165223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2461 + ... + 3222.

It is an arithmetic number, because the mean of its divisors is an integer number (363776).

2^2165223 is an apocalyptic number.

2165223 is a deficient number, since it is larger than the sum of its proper divisors (744985).

2165223 is a wasteful number, since it uses less digits than its factorization.

2165223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813.

The product of its digits is 720, while the sum is 21.

The square root of 2165223 is about 1471.4696734897. The cubic root of 2165223 is about 129.3701883902.

The spelling of 2165223 in words is "two million, one hundred sixty-five thousand, two hundred twenty-three".