2591005 has 16 divisors (see below), whose sum is σ = 3265920. Its totient is φ = 1970752.

The previous prime is 2590997. The next prime is 2591023. The reversal of 2591005 is 5001952.

2591005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2591005 - 2³ = 2590997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15432 + ... + 15598.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

2^2591005 is an apocalyptic number.

It is an amenable number.

2591005 is a deficient number, since it is larger than the sum of its proper divisors (674915).

2591005 is a wasteful number, since it uses less digits than its factorization.

2591005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2591005 is about 1609.6599019669. The cubic root of 2591005 is about 137.3481298403.

Adding to 2591005 its reverse (5001952), we get a palindrome (7592957).

The spelling of 2591005 in words is "two million, five hundred ninety-one thousand, five".