2265591 has 8 divisors (see below), whose sum is σ = 3078000. Its totient is φ = 1481792.

The previous prime is 2265589. The next prime is 2265611. The reversal of 2265591 is 1955622.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2265591 - 2¹ = 2265589 is a prime.

2265591 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265521) 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, 6966 + ... + 7283.

It is an arithmetic number, because the mean of its divisors is an integer number (384750).

2^2265591 is an apocalyptic number.

2265591 is a deficient number, since it is larger than the sum of its proper divisors (812409).

2265591 is a wasteful number, since it uses less digits than its factorization.

2265591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14305.

The product of its digits is 5400, while the sum is 30.

The square root of 2265591 is about 1505.1880281214. The cubic root of 2265591 is about 131.3390398086.

The spelling of 2265591 in words is "two million, two hundred sixty-five thousand, five hundred ninety-one".