528489 has 12 divisors (see below), whose sum is σ = 822276. Its totient is φ = 325152.

The previous prime is 528487. The next prime is 528491. The reversal of 528489 is 984825.

It is an interprime number because it is at equal distance from previous prime (528487) and next prime (528491).

It can be written as a sum of positive squares in 2 ways, for example, as 27225 + 501264 = 165^2 + 708^2 .

It is not a de Polignac number, because 528489 - 2¹ = 528487 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (528487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2142 + ... + 2375.

It is an arithmetic number, because the mean of its divisors is an integer number (68523).

2⁵²⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

528489 is a deficient number, since it is larger than the sum of its proper divisors (293787).

528489 is a wasteful number, since it uses less digits than its factorization.

528489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536 (or 4533 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 528489 is about 726.9724891631. The cubic root of 528489 is about 80.8497443091.

The spelling of 528489 in words is "five hundred twenty-eight thousand, four hundred eighty-nine".