581493043 has 4 divisors (see below), whose sum is σ = 612097960. Its totient is φ = 550888128.

The previous prime is 581493023. The next prime is 581493047. The reversal of 581493043 is 340394185.

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

It is not a de Polignac number, because 581493043 - 2¹³ = 581484851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 581492993 and 581493011.

It is not an unprimeable number, because it can be changed into a prime (581493047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15302430 + ... + 15302467.

It is an arithmetic number, because the mean of its divisors is an integer number (153024490).

Almost surely, 2^581493043 is an apocalyptic number.

581493043 is a deficient number, since it is larger than the sum of its proper divisors (30604917).

581493043 is a wasteful number, since it uses less digits than its factorization.

581493043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30604916.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 581493043 is about 24114.1668527030. The cubic root of 581493043 is about 834.6700708085.

The spelling of 581493043 in words is "five hundred eighty-one million, four hundred ninety-three thousand, forty-three".