2585391 has 4 divisors (see below), whose sum is σ = 3447192. Its totient is φ = 1723592.

The previous prime is 2585389. The next prime is 2585399. The reversal of 2585391 is 1935852.

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 2585391 - 2¹ = 2585389 is a prime.

It is an Ulam number.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585399) 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, 430896 + ... + 430901.

It is an arithmetic number, because the mean of its divisors is an integer number (861798).

2^2585391 is an apocalyptic number.

2585391 is a deficient number, since it is larger than the sum of its proper divisors (861801).

2585391 is an equidigital number, since it uses as much as digits as its factorization.

2585391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861800.

The product of its digits is 10800, while the sum is 33.

The square root of 2585391 is about 1607.9151096995. The cubic root of 2585391 is about 137.2488594834.

The spelling of 2585391 in words is "two million, five hundred eighty-five thousand, three hundred ninety-one".