528569 has 4 divisors (see below), whose sum is σ = 538596. Its totient is φ = 518544.

The previous prime is 528559. The next prime is 528611. The reversal of 528569 is 965825.

528569 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 211600 + 316969 = 460^2 + 563^2 .

It is a cyclic number.

It is not a de Polignac number, because 528569 - 2⁸ = 528313 is a prime.

It is a super-2 number, since 2×528569² = 558770375522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528509) 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, 4934 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (134649).

2⁵²⁸⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

528569 is a deficient number, since it is larger than the sum of its proper divisors (10027).

528569 is an equidigital number, since it uses as much as digits as its factorization.

528569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10026.

The product of its digits is 21600, while the sum is 35.

The square root of 528569 is about 727.0275097959. The cubic root of 528569 is about 80.8538236455.

It can be divided in two parts, 5 and 28569, that multiplied together give a triangular number (142845 = T₅₃₄).

The spelling of 528569 in words is "five hundred twenty-eight thousand, five hundred sixty-nine".