531528 has 16 divisors (see below), whose sum is σ = 1328880. Its totient is φ = 177168.

The previous prime is 531521. The next prime is 531547. The reversal of 531528 is 825135.

531528 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 22147 = 531528 / (5 + 3 + 1 + 5 + 2 + 8).

It is a plaindrome in base 11.

It is a nialpdrome in base 15.

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 531498 and 531507.

It is not an unprimeable number, because it can be changed into a prime (531521) 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, 11050 + ... + 11097.

It is an arithmetic number, because the mean of its divisors is an integer number (83055).

2⁵³¹⁵²⁸ is an apocalyptic number.

It is an amenable number.

531528 is an abundant number, since it is smaller than the sum of its proper divisors (797352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531528 is a wasteful number, since it uses less digits than its factorization.

531528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22156 (or 22152 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 531528 is about 729.0596683400. The cubic root of 531528 is about 81.0044198167.

The spelling of 531528 in words is "five hundred thirty-one thousand, five hundred twenty-eight".