581944 has 32 divisors (see below), whose sum is σ = 1263600. Its totient is φ = 248320.

The previous prime is 581941. The next prime is 581947. The reversal of 581944 is 449185.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (581941) and next prime (581947).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1302 + ... + 1690.

2⁵⁸¹⁹⁴⁴ 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 581944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631800).

581944 is an abundant number, since it is smaller than the sum of its proper divisors (681656).

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

581944 is a wasteful number, since it uses less digits than its factorization.

581944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 419 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 581944 is about 762.8525414521. The cubic root of 581944 is about 83.4885781645.

It can be divided in two parts, 5819 and 44, that multiplied together give a square (256036 = 506²).

The spelling of 581944 in words is "five hundred eighty-one thousand, nine hundred forty-four".