528281 has 4 divisors (see below), whose sum is σ = 568932. Its totient is φ = 487632.

The previous prime is 528263. The next prime is 528289. The reversal of 528281 is 182825.

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 25600 + 502681 = 160^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 528281 - 2⁶ = 528217 is a prime.

It is a super-2 number, since 2×528281² = 558161629922, which contains 22 as substring.

It is a Curzon number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 528281.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 528281.

It is not an unprimeable number, because it can be changed into a prime (528289) 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, 20306 + ... + 20331.

It is an arithmetic number, because the mean of its divisors is an integer number (142233).

2⁵²⁸²⁸¹ is an apocalyptic number.

It is an amenable number.

528281 is a deficient number, since it is larger than the sum of its proper divisors (40651).

528281 is a wasteful number, since it uses less digits than its factorization.

528281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40650.

The product of its digits is 1280, while the sum is 26.

The square root of 528281 is about 726.8294160255. The cubic root of 528281 is about 80.8391361076.

The spelling of 528281 in words is "five hundred twenty-eight thousand, two hundred eighty-one".