528565 has 8 divisors (see below), whose sum is σ = 645048. Its totient is φ = 415680.

The previous prime is 528559. The next prime is 528611. The reversal of 528565 is 565825.

It can be written as a sum of positive squares in 4 ways, for example, as 36 + 528529 = 6^2 + 727^2 .

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

It is not a de Polignac number, because 528565 - 2⁹ = 528053 is a prime.

It is a d-powerful number, because it can be written as 5² + 2¹⁹ + 5² + 8⁴ + 6 + 5³ .

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 562 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (80631).

2⁵²⁸⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

528565 is a deficient number, since it is larger than the sum of its proper divisors (116483).

528565 is a wasteful number, since it uses less digits than its factorization.

528565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799.

The product of its digits is 12000, while the sum is 31.

The square root of 528565 is about 727.0247588631. The cubic root of 528565 is about 80.8536196885.

The spelling of 528565 in words is "five hundred twenty-eight thousand, five hundred sixty-five".