2165953 has 8 divisors (see below), whose sum is σ = 2347488. Its totient is φ = 1990464.

The previous prime is 2165941. The next prime is 2165957. The reversal of 2165953 is 3595612.

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

It is a cyclic number.

It is not a de Polignac number, because 2165953 - 2⁵ = 2165921 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2165957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751 + ... + 2212.

It is an arithmetic number, because the mean of its divisors is an integer number (293436).

2^2165953 is an apocalyptic number.

It is an amenable number.

2165953 is a deficient number, since it is larger than the sum of its proper divisors (181535).

2165953 is a wasteful number, since it uses less digits than its factorization.

2165953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023.

The product of its digits is 8100, while the sum is 31.

The square root of 2165953 is about 1471.7177039093. The cubic root of 2165953 is about 129.3847257113.

It can be divided in two parts, 21659 and 53, that added together give a palindrome (21712).

The spelling of 2165953 in words is "two million, one hundred sixty-five thousand, nine hundred fifty-three".