530581 has 4 divisors (see below), whose sum is σ = 543564. Its totient is φ = 517600.

The previous prime is 530567. The next prime is 530597. The reversal of 530581 is 185035.

530581 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 188356 + 342225 = 434^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 530581 - 2⁵ = 530549 is a prime.

It is a super-2 number, since 2×530581² = 563032395122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 (530501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6430 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (135891).

2⁵³⁰⁵⁸¹ is an apocalyptic number.

It is an amenable number.

530581 is a deficient number, since it is larger than the sum of its proper divisors (12983).

530581 is a wasteful number, since it uses less digits than its factorization.

530581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12982.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 530581 is about 728.4099120687. The cubic root of 530581 is about 80.9562838839.

It can be divided in two parts, 530 and 581, that added together give a palindrome (1111).

The spelling of 530581 in words is "five hundred thirty thousand, five hundred eighty-one".