581116 has 12 divisors (see below), whose sum is σ = 1025640. Its totient is φ = 288080.

The previous prime is 581101. The next prime is 581137. The reversal of 581116 is 611185.

It is a congruent number.

It is an unprimeable number.

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, 31 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (85470).

2⁵⁸¹¹¹⁶ is an apocalyptic number.

It is an amenable number.

581116 is a deficient number, since it is larger than the sum of its proper divisors (444524).

581116 is a wasteful number, since it uses less digits than its factorization.

581116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244 (or 1242 counting only the distinct ones).

The product of its digits is 240, while the sum is 22.

The square root of 581116 is about 762.3096483713. The cubic root of 581116 is about 83.4489630386.

The spelling of 581116 in words is "five hundred eighty-one thousand, one hundred sixteen".