531589 has 2 divisors, whose sum is σ = 531590. Its totient is φ = 531588.

The previous prime is 531581. The next prime is 531611. The reversal of 531589 is 985135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396900 + 134689 = 630^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 531589 - 2³ = 531581 is a prime.

It is a d-powerful number, because it can be written as 5 + 3¹² + 5³ + 1 + 8 + 9 .

It is a self number, because there is not a number n which added to its sum of digits gives 531589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531581) 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 as a sum of consecutive naturals, namely, 265794 + 265795.

It is an arithmetic number, because the mean of its divisors is an integer number (265795).

2⁵³¹⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

531589 is a deficient number, since it is larger than the sum of its proper divisors (1).

531589 is an equidigital number, since it uses as much as digits as its factorization.

531589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 31.

The square root of 531589 is about 729.1015018501. The cubic root of 531589 is about 81.0075184811.

The spelling of 531589 in words is "five hundred thirty-one thousand, five hundred eighty-nine".