528530 has 16 divisors (see below), whose sum is σ = 1007640. Its totient is φ = 198912.

The previous prime is 528527. The next prime is 528559. The reversal of 528530 is 35825.

It is a Cunningham number, because it is equal to 727²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 410881 + 117649 = 641^2 + 343^2 .

It is an Ulam number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 528496 and 528505.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 528530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385 + ... + 1724.

2⁵²⁸⁵³⁰ is an apocalyptic number.

528530 is a deficient number, since it is larger than the sum of its proper divisors (479110).

528530 is a wasteful number, since it uses less digits than its factorization.

528530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 528530 is about 727.0006877576. Note that the first 3 decimals coincide. The cubic root of 528530 is about 80.8518350204.

The spelling of 528530 in words is "five hundred twenty-eight thousand, five hundred thirty".