531489 has 8 divisors (see below), whose sum is σ = 809920. Its totient is φ = 303696.

The previous prime is 531481. The next prime is 531497. The reversal of 531489 is 984135.

It is an interprime number because it is at equal distance from previous prime (531481) and next prime (531497).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531489 - 2³ = 531481 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 531489.

It is not an unprimeable number, because it can be changed into a prime (531481) 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, 12634 + ... + 12675.

It is an arithmetic number, because the mean of its divisors is an integer number (101240).

531489 is a Friedman number, since it can be written as 48+9^(5+1^3), using all its digits and the basic arithmetic operations.

2⁵³¹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

531489 is a deficient number, since it is larger than the sum of its proper divisors (278431).

531489 is a wasteful number, since it uses less digits than its factorization.

531489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25319.

The product of its digits is 4320, while the sum is 30.

The square root of 531489 is about 729.0329210674. The cubic root of 531489 is about 81.0024385792.

The spelling of 531489 in words is "five hundred thirty-one thousand, four hundred eighty-nine".