581053812 has 48 divisors (see below), whose sum is σ = 1439327232. Its totient is φ = 181811200.

The previous prime is 581053799. The next prime is 581053841. The reversal of 581053812 is 218350185.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 78253 + ... + 85355.

It is an arithmetic number, because the mean of its divisors is an integer number (29985984).

Almost surely, 2^581053812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 581053812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719663616).

581053812 is an abundant number, since it is smaller than the sum of its proper divisors (858273420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

581053812 is a wasteful number, since it uses less digits than its factorization.

581053812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7528 (or 7526 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 581053812 is about 24105.0578095138. The cubic root of 581053812 is about 834.4598617498.

The spelling of 581053812 in words is "five hundred eighty-one million, fifty-three thousand, eight hundred twelve".