2580391 has 8 divisors (see below), whose sum is σ = 2912400. Its totient is φ = 2264640.

The previous prime is 2580341. The next prime is 2580401. The reversal of 2580391 is 1930852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2580391 - 2¹¹ = 2578343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3726 + ... + 4363.

It is an arithmetic number, because the mean of its divisors is an integer number (364050).

2^2580391 is an apocalyptic number.

2580391 is a deficient number, since it is larger than the sum of its proper divisors (332009).

2580391 is a wasteful number, since it uses less digits than its factorization.

2580391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2580391 is about 1606.3595487935. The cubic root of 2580391 is about 137.1603252076.

The spelling of 2580391 in words is "two million, five hundred eighty thousand, three hundred ninety-one".