2591291 has 4 divisors (see below), whose sum is σ = 2603784. Its totient is φ = 2578800.

The previous prime is 2591273. The next prime is 2591333. The reversal of 2591291 is 1921952.

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 2591291 - 2¹⁸ = 2329147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2591261) 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, 5930 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (650946).

2^2591291 is an apocalyptic number.

2591291 is a deficient number, since it is larger than the sum of its proper divisors (12493).

2591291 is a wasteful number, since it uses less digits than its factorization.

2591291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12492.

The product of its digits is 1620, while the sum is 29.

The square root of 2591291 is about 1609.7487381576. The cubic root of 2591291 is about 137.3531832359.

It can be divided in two parts, 2591 and 291, that added together give a palindrome (2882).

The spelling of 2591291 in words is "two million, five hundred ninety-one thousand, two hundred ninety-one".