2011165 has 8 divisors (see below), whose sum is σ = 2599128. Its totient is φ = 1485120.

The previous prime is 2011147. The next prime is 2011171. The reversal of 2011165 is 5611102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 441 + 2010724 = 21^2 + 1418^2 .

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

It is not a de Polignac number, because 2011165 - 2⁹ = 2010653 is a prime.

It is a Duffinian number.

2011165 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15406 + ... + 15535.

It is an arithmetic number, because the mean of its divisors is an integer number (324891).

2^2011165 is an apocalyptic number.

It is an amenable number.

2011165 is a deficient number, since it is larger than the sum of its proper divisors (587963).

2011165 is a wasteful number, since it uses less digits than its factorization.

2011165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30959.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2011165 is about 1418.1554921799. The cubic root of 2011165 is about 126.2261203733.

Adding to 2011165 its reverse (5611102), we get a palindrome (7622267).

The spelling of 2011165 in words is "two million, eleven thousand, one hundred sixty-five".