2165303 has 8 divisors (see below), whose sum is σ = 2489760. Its totient is φ = 1844640.

The previous prime is 2165291. The next prime is 2165321. The reversal of 2165303 is 3035612.

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

It is not a de Polignac number, because 2165303 - 2⁸ = 2165047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165323) 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, 413 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (311220).

2^2165303 is an apocalyptic number.

2165303 is a deficient number, since it is larger than the sum of its proper divisors (324457).

2165303 is a wasteful number, since it uses less digits than its factorization.

2165303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 2165303 is about 1471.4968569453. The cubic root of 2165303 is about 129.3717816807.

The spelling of 2165303 in words is "two million, one hundred sixty-five thousand, three hundred three".