2582591 has 4 divisors (see below), whose sum is σ = 2817384. Its totient is φ = 2347800.

The previous prime is 2582581. The next prime is 2582609. The reversal of 2582591 is 1952852.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2582591 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 (2582501) 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 3 ways as a sum of consecutive naturals, for example, 117380 + ... + 117401.

It is an arithmetic number, because the mean of its divisors is an integer number (704346).

2^2582591 is an apocalyptic number.

2582591 is a deficient number, since it is larger than the sum of its proper divisors (234793).

2582591 is a wasteful number, since it uses less digits than its factorization.

2582591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234792.

The product of its digits is 7200, while the sum is 32.

The square root of 2582591 is about 1607.0441810977. The cubic root of 2582591 is about 137.1992943663.

The spelling of 2582591 in words is "two million, five hundred eighty-two thousand, five hundred ninety-one".