2265533291 has 4 divisors (see below), whose sum is σ = 2589180912. Its totient is φ = 1941885672.

The previous prime is 2265533287. The next prime is 2265533311. The reversal of 2265533291 is 1923355622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2265533291 - 2² = 2265533287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2265533891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161823800 + ... + 161823813.

It is an arithmetic number, because the mean of its divisors is an integer number (647295228).

Almost surely, 2^2265533291 is an apocalyptic number.

2265533291 is a deficient number, since it is larger than the sum of its proper divisors (323647621).

2265533291 is an equidigital number, since it uses as much as digits as its factorization.

2265533291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323647620.

The product of its digits is 97200, while the sum is 38.

The square root of 2265533291 is about 47597.6185433683. The cubic root of 2265533291 is about 1313.3792464573.

The spelling of 2265533291 in words is "two billion, two hundred sixty-five million, five hundred thirty-three thousand, two hundred ninety-one".