531529 has 4 divisors (see below), whose sum is σ = 534400. Its totient is φ = 528660.

The previous prime is 531521. The next prime is 531547. The reversal of 531529 is 925135.

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: 925135 = 5 ⋅185027.

It is a cyclic number.

It is not a de Polignac number, because 531529 - 2³ = 531521 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (531521) 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, 1137 + ... + 1534.

It is an arithmetic number, because the mean of its divisors is an integer number (133600).

2⁵³¹⁵²⁹ is an apocalyptic number.

It is an amenable number.

531529 is a deficient number, since it is larger than the sum of its proper divisors (2871).

531529 is a wasteful number, since it uses less digits than its factorization.

531529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870.

The product of its digits is 1350, while the sum is 25.

The square root of 531529 is about 729.0603541546. The cubic root of 531529 is about 81.0044706164.

The spelling of 531529 in words is "five hundred thirty-one thousand, five hundred twenty-nine".