581044 has 12 divisors (see below), whose sum is σ = 1052100. Its totient is φ = 280448.

The previous prime is 581041. The next prime is 581047. The reversal of 581044 is 440185.

It is an interprime number because it is at equal distance from previous prime (581041) and next prime (581047).

It can be written as a sum of positive squares in 2 ways, for example, as 289444 + 291600 = 538^2 + 540^2 .

It is a super-2 number, since 2×581044² = 675224259872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2389 + ... + 2620.

It is an arithmetic number, because the mean of its divisors is an integer number (87675).

2⁵⁸¹⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

581044 is a deficient number, since it is larger than the sum of its proper divisors (471056).

581044 is a wasteful number, since it uses less digits than its factorization.

581044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042 (or 5040 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 581044 is about 762.2624220044. The cubic root of 581044 is about 83.4455164671.

The spelling of 581044 in words is "five hundred eighty-one thousand, forty-four".