2591089 has 4 divisors (see below), whose sum is σ = 2743524. Its totient is φ = 2438656.

The previous prime is 2591059. The next prime is 2591093. The reversal of 2591089 is 9801952.

2591089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1016064 + 1575025 = 1008^2 + 1255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2591089 - 2¹³ = 2582897 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2591059) 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 3 ways as a sum of consecutive naturals, for example, 76192 + ... + 76225.

It is an arithmetic number, because the mean of its divisors is an integer number (685881).

2^2591089 is an apocalyptic number.

It is an amenable number.

2591089 is a deficient number, since it is larger than the sum of its proper divisors (152435).

2591089 is a wasteful number, since it uses less digits than its factorization.

2591089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152434.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 2591089 is about 1609.6859942237. The cubic root of 2591089 is about 137.3496140929.

The spelling of 2591089 in words is "two million, five hundred ninety-one thousand, eighty-nine".