2291165 has 8 divisors (see below), whose sum is σ = 2757888. Its totient is φ = 1827280.

The previous prime is 2291143. The next prime is 2291167. The reversal of 2291165 is 5611922.

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

It is not a de Polignac number, because 2291165 - 2¹² = 2287069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291167) 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, 2060 + ... + 2970.

It is an arithmetic number, because the mean of its divisors is an integer number (344736).

2^2291165 is an apocalyptic number.

It is an amenable number.

2291165 is a deficient number, since it is larger than the sum of its proper divisors (466723).

2291165 is an equidigital number, since it uses as much as digits as its factorization.

2291165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419.

The product of its digits is 1080, while the sum is 26.

The square root of 2291165 is about 1513.6594729331. The cubic root of 2291165 is about 131.8313771246.

It can be divided in two parts, 2291 and 165, that multiplied together give a triangular number (378015 = T₈₆₉).

The spelling of 2291165 in words is "two million, two hundred ninety-one thousand, one hundred sixty-five".