2585891 has 24 divisors (see below), whose sum is σ = 3370752. Its totient is φ = 1940400.

The previous prime is 2585839. The next prime is 2585899. The reversal of 2585891 is 1985852.

It is not a de Polignac number, because 2585891 - 2⁶ = 2585827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2585899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36386 + ... + 36456.

It is an arithmetic number, because the mean of its divisors is an integer number (140448).

2^2585891 is an apocalyptic number.

2585891 is a deficient number, since it is larger than the sum of its proper divisors (784861).

2585891 is a wasteful number, since it uses less digits than its factorization.

2585891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 132 counting only the distinct ones).

The product of its digits is 28800, while the sum is 38.

The square root of 2585891 is about 1608.0705830280. The cubic root of 2585891 is about 137.2577066308.

The spelling of 2585891 in words is "two million, five hundred eighty-five thousand, eight hundred ninety-one".