2165135 has 8 divisors (see below), whose sum is σ = 2969376. Its totient is φ = 1484640.

The previous prime is 2165131. The next prime is 2165143. The reversal of 2165135 is 5315612.

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

It is not a de Polignac number, because 2165135 - 2² = 2165131 is a prime.

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 2165135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165131) 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, 30896 + ... + 30965.

It is an arithmetic number, because the mean of its divisors is an integer number (371172).

2^2165135 is an apocalyptic number.

2165135 is a deficient number, since it is larger than the sum of its proper divisors (804241).

2165135 is an equidigital number, since it uses as much as digits as its factorization.

2165135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61873.

The product of its digits is 900, while the sum is 23.

The square root of 2165135 is about 1471.4397711086. The cubic root of 2165135 is about 129.3684357254.

It can be divided in two parts, 21 and 65135, that added together give a palindrome (65156).

The spelling of 2165135 in words is "two million, one hundred sixty-five thousand, one hundred thirty-five".