2265091 has 4 divisors (see below), whose sum is σ = 2268232. Its totient is φ = 2261952.

The previous prime is 2265079. The next prime is 2265101. The reversal of 2265091 is 1905622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1905622 = 2 ⋅952811.

It is a cyclic number.

It is not a de Polignac number, because 2265091 - 2¹⁵ = 2232323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2265001) 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, 115 + ... + 2131.

It is an arithmetic number, because the mean of its divisors is an integer number (567058).

2^2265091 is an apocalyptic number.

2265091 is a deficient number, since it is larger than the sum of its proper divisors (3141).

2265091 is a wasteful number, since it uses less digits than its factorization.

2265091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140.

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

The square root of 2265091 is about 1505.0219267506. The cubic root of 2265091 is about 131.3293772303.

The spelling of 2265091 in words is "two million, two hundred sixty-five thousand, ninety-one".