2591289 has 6 divisors (see below), whose sum is σ = 3742986. Its totient is φ = 1727520.

The previous prime is 2591273. The next prime is 2591333. The reversal of 2591289 is 9821952.

2591289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2585664 + 5625 = 1608^2 + 75^2 .

It is not a de Polignac number, because 2591289 - 2⁴ = 2591273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2591209) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 143952 + ... + 143969.

It is an arithmetic number, because the mean of its divisors is an integer number (623831).

2^2591289 is an apocalyptic number.

It is an amenable number.

2591289 is a deficient number, since it is larger than the sum of its proper divisors (1151697).

2591289 is a wasteful number, since it uses less digits than its factorization.

2591289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287927 (or 287924 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 2591289 is about 1609.7481169425. The cubic root of 2591289 is about 137.3531478987.

The spelling of 2591289 in words is "two million, five hundred ninety-one thousand, two hundred eighty-nine".