581441 has 4 divisors (see below), whose sum is σ = 664512. Its totient is φ = 498372.

The previous prime is 581429. The next prime is 581443. The reversal of 581441 is 144185.

581441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144185 = 5 ⋅28837.

It is not a de Polignac number, because 581441 - 2⁶ = 581377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (581443) 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, 41525 + ... + 41538.

It is an arithmetic number, because the mean of its divisors is an integer number (166128).

2⁵⁸¹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

581441 is a deficient number, since it is larger than the sum of its proper divisors (83071).

581441 is an equidigital number, since it uses as much as digits as its factorization.

581441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83070.

The product of its digits is 640, while the sum is 23.

The square root of 581441 is about 762.5227865448. The cubic root of 581441 is about 83.4645169375.

The spelling of 581441 in words is "five hundred eighty-one thousand, four hundred forty-one".