528052909 has 8 divisors (see below), whose sum is σ = 546872760. Its totient is φ = 509273856.

The previous prime is 528052897. The next prime is 528052957. The reversal of 528052909 is 909250825.

It can be written as a sum of positive squares in 4 ways, for example, as 7209225 + 520843684 = 2685^2 + 22822^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-528052909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528052969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17457 + ... + 36889.

It is an arithmetic number, because the mean of its divisors is an integer number (68359095).

Almost surely, 2^528052909 is an apocalyptic number.

It is an amenable number.

528052909 is a deficient number, since it is larger than the sum of its proper divisors (18819851).

528052909 is a wasteful number, since it uses less digits than its factorization.

528052909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20399.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 528052909 is about 22979.4018416494. The cubic root of 528052909 is about 808.2750004409.

The spelling of 528052909 in words is "five hundred twenty-eight million, fifty-two thousand, nine hundred nine".