528109 has 4 divisors (see below), whose sum is σ = 537120. Its totient is φ = 519100.

The previous prime is 528107. The next prime is 528127. The reversal of 528109 is 901825.

528109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 528109 - 2¹ = 528107 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528107) 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, 4417 + ... + 4534.

It is an arithmetic number, because the mean of its divisors is an integer number (134280).

2⁵²⁸¹⁰⁹ is an apocalyptic number.

528109 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

528109 is a deficient number, since it is larger than the sum of its proper divisors (9011).

528109 is an equidigital number, since it uses as much as digits as its factorization.

528109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9010.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 528109 is about 726.7110842694. The cubic root of 528109 is about 80.8303618374.

The spelling of 528109 in words is "five hundred twenty-eight thousand, one hundred nine".