581280879 has 4 divisors (see below), whose sum is σ = 775041176. Its totient is φ = 387520584.

The previous prime is 581280857. The next prime is 581280883. The reversal of 581280879 is 978082185.

581280879 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 is not a de Polignac number, because 581280879 - 2¹⁶ = 581215343 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 (581280979) 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, 96880144 + ... + 96880149.

It is an arithmetic number, because the mean of its divisors is an integer number (193760294).

Almost surely, 2^581280879 is an apocalyptic number.

581280879 is a deficient number, since it is larger than the sum of its proper divisors (193760297).

581280879 is a wasteful number, since it uses less digits than its factorization.

581280879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193760296.

The product of its (nonzero) digits is 322560, while the sum is 48.

The square root of 581280879 is about 24109.7672946049. The cubic root of 581280879 is about 834.5685456715.

The spelling of 581280879 in words is "five hundred eighty-one million, two hundred eighty thousand, eight hundred seventy-nine".