581480979 has 4 divisors (see below), whose sum is σ = 775307976. Its totient is φ = 387653984.

The previous prime is 581480969. The next prime is 581480987. The reversal of 581480979 is 979084185.

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 581480979 - 2⁵ = 581480947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (581480969) 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, 96913494 + ... + 96913499.

It is an arithmetic number, because the mean of its divisors is an integer number (193826994).

Almost surely, 2^581480979 is an apocalyptic number.

581480979 is a deficient number, since it is larger than the sum of its proper divisors (193826997).

581480979 is a wasteful number, since it uses less digits than its factorization.

581480979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193826996.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 581480979 is about 24113.9167079925. The cubic root of 581480979 is about 834.6642985816.

The spelling of 581480979 in words is "five hundred eighty-one million, four hundred eighty thousand, nine hundred seventy-nine".