2590491 has 4 divisors (see below), whose sum is σ = 3453992. Its totient is φ = 1726992.

The previous prime is 2590463. The next prime is 2590493. The reversal of 2590491 is 1940952.

It is a happy number.

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

It is not a de Polignac number, because 2590491 - 2¹⁹ = 2066203 is a prime.

It is a D-number.

It is the 1610-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2590493) by changing a digit.

It is a nontrivial repunit in base 1609.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431746 + ... + 431751.

It is an arithmetic number, because the mean of its divisors is an integer number (863498).

2^2590491 is an apocalyptic number.

2590491 is a deficient number, since it is larger than the sum of its proper divisors (863501).

2590491 is an equidigital number, since it uses as much as digits as its factorization.

2590491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863500.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2590491 is about 1609.5002329916. The cubic root of 2590491 is about 137.3390469287.

It can be divided in two parts, 2590 and 491, that added together give a triangular number (3081 = T₇₈).

The spelling of 2590491 in words is "two million, five hundred ninety thousand, four hundred ninety-one".