581225116 has 12 divisors (see below), whose sum is σ = 1018191888. Its totient is φ = 290313152.

The previous prime is 581225093. The next prime is 581225173. The reversal of 581225116 is 611522185.

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, 70456 + ... + 78271.

It is an arithmetic number, because the mean of its divisors is an integer number (84849324).

Almost surely, 2^581225116 is an apocalyptic number.

It is an amenable number.

581225116 is a deficient number, since it is larger than the sum of its proper divisors (436966772).

581225116 is a wasteful number, since it uses less digits than its factorization.

581225116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149708 (or 149706 counting only the distinct ones).

The product of its digits is 4800, while the sum is 31.

The square root of 581225116 is about 24108.6108268394. The cubic root of 581225116 is about 834.5418577508.

The spelling of 581225116 in words is "five hundred eighty-one million, two hundred twenty-five thousand, one hundred sixteen".