581042409 has 8 divisors (see below), whose sum is σ = 774834912. Its totient is φ = 387305760.

The previous prime is 581042383. The next prime is 581042411. The reversal of 581042409 is 904240185.

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

It is not a de Polignac number, because 581042409 - 2⁵ = 581042377 is a prime.

It is a super-2 number, since 2×581042409² = 675220562113046562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 581042409.

It is not an unprimeable number, because it can be changed into a prime (581042459) 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, 30982 + ... + 46064.

It is an arithmetic number, because the mean of its divisors is an integer number (96854364).

Almost surely, 2^581042409 is an apocalyptic number.

It is an amenable number.

581042409 is a deficient number, since it is larger than the sum of its proper divisors (193792503).

581042409 is a wasteful number, since it uses less digits than its factorization.

581042409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27927.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 581042409 is about 24104.8212812292. The cubic root of 581042409 is about 834.4544030425.

The spelling of 581042409 in words is "five hundred eighty-one million, forty-two thousand, four hundred nine".