2236165 has 4 divisors (see below), whose sum is σ = 2683404. Its totient is φ = 1788928.

The previous prime is 2236153. The next prime is 2236183. The reversal of 2236165 is 5616322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5616322 = 2 ⋅2808161.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 1623076 = 783^2 + 1274^2 .

It is a cyclic number.

It is not a de Polignac number, because 2236165 - 2⁵ = 2236133 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 3 + 6² + 1 + 6⁵ + 5³ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223612 + ... + 223621.

It is an arithmetic number, because the mean of its divisors is an integer number (670851).

2^2236165 is an apocalyptic number.

It is an amenable number.

2236165 is a deficient number, since it is larger than the sum of its proper divisors (447239).

2236165 is an equidigital number, since it uses as much as digits as its factorization.

2236165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447238.

The product of its digits is 2160, while the sum is 25.

The square root of 2236165 is about 1495.3812222975. The cubic root of 2236165 is about 130.7679398772.

It can be divided in two parts, 2236 and 165, that added together give a 4-th power (2401 = 7⁴).

The spelling of 2236165 in words is "two million, two hundred thirty-six thousand, one hundred sixty-five".