2291065 has 16 divisors (see below), whose sum is σ = 3192192. Its totient is φ = 1545984.

The previous prime is 2291063. The next prime is 2291119. The reversal of 2291065 is 5601922.

It is a cyclic number.

It is not a de Polignac number, because 2291065 - 2¹ = 2291063 is a prime.

It is a Duffinian number.

2291065 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2291063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1857 + ... + 2833.

It is an arithmetic number, because the mean of its divisors is an integer number (199512).

2^2291065 is an apocalyptic number.

It is an amenable number.

2291065 is a deficient number, since it is larger than the sum of its proper divisors (901127).

2291065 is an equidigital number, since it uses as much as digits as its factorization.

2291065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2291065 is about 1513.6264400439. The cubic root of 2291065 is about 131.8294591296.

Adding to 2291065 its reverse (5601922), we get a palindrome (7892987).

The spelling of 2291065 in words is "two million, two hundred ninety-one thousand, sixty-five".