581489 has 4 divisors (see below), whose sum is σ = 595056. Its totient is φ = 567924.

The previous prime is 581473. The next prime is 581491. The reversal of 581489 is 984185.

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: 984185 = 5 ⋅196837.

It is a cyclic number.

It is not a de Polignac number, because 581489 - 2⁴ = 581473 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 581489.

It is not an unprimeable number, because it can be changed into a prime (581429) 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, 6719 + ... + 6804.

It is an arithmetic number, because the mean of its divisors is an integer number (148764).

2⁵⁸¹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

581489 is a deficient number, since it is larger than the sum of its proper divisors (13567).

581489 is a wasteful number, since it uses less digits than its factorization.

581489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13566.

The product of its digits is 11520, while the sum is 35.

The square root of 581489 is about 762.5542603645. The cubic root of 581489 is about 83.4668136375.

The spelling of 581489 in words is "five hundred eighty-one thousand, four hundred eighty-nine".