528865 has 12 divisors (see below), whose sum is σ = 672084. Its totient is φ = 399456.

The previous prime is 528863. The next prime is 528877. The reversal of 528865 is 568825.

It can be written as a sum of positive squares in 2 ways, for example, as 369664 + 159201 = 608^2 + 399^2 .

It is not a de Polignac number, because 528865 - 2¹ = 528863 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 528865.

It is not an unprimeable number, because it can be changed into a prime (528863) 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 11 ways as a sum of consecutive naturals, for example, 1659 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (56007).

2⁵²⁸⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

528865 is a deficient number, since it is larger than the sum of its proper divisors (143219).

528865 is a wasteful number, since it uses less digits than its factorization.

528865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 317 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 528865 is about 727.2310499422. The cubic root of 528865 is about 80.8689136121.

The spelling of 528865 in words is "five hundred twenty-eight thousand, eight hundred sixty-five".