2559491 has 4 divisors (see below), whose sum is σ = 2792184. Its totient is φ = 2326800.

The previous prime is 2559481. The next prime is 2559493. The reversal of 2559491 is 1949552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2559491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2559493) 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, 116330 + ... + 116351.

It is an arithmetic number, because the mean of its divisors is an integer number (698046).

2^2559491 is an apocalyptic number.

2559491 is a deficient number, since it is larger than the sum of its proper divisors (232693).

2559491 is a wasteful number, since it uses less digits than its factorization.

2559491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232692.

The product of its digits is 16200, while the sum is 35.

The square root of 2559491 is about 1599.8409295927. The cubic root of 2559491 is about 136.7890086982.

The spelling of 2559491 in words is "two million, five hundred fifty-nine thousand, four hundred ninety-one".