581441604 has 12 divisors (see below), whose sum is σ = 1356697104. Its totient is φ = 193813864.

The previous prime is 581441603. The next prime is 581441621. The reversal of 581441604 is 406144185.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (581441603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24226722 + ... + 24226745.

It is an arithmetic number, because the mean of its divisors is an integer number (113058092).

Almost surely, 2^581441604 is an apocalyptic number.

It is an amenable number.

581441604 is an abundant number, since it is smaller than the sum of its proper divisors (775255500).

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

581441604 is a wasteful number, since it uses less digits than its factorization.

581441604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48453474 (or 48453472 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 581441604 is about 24113.1002569143. The cubic root of 581441604 is about 834.6454583846.

Adding to 581441604 its reverse (406144185), we get a palindrome (987585789).

The spelling of 581441604 in words is "five hundred eighty-one million, four hundred forty-one thousand, six hundred four".