528537385 has 4 divisors (see below), whose sum is σ = 634244868. Its totient is φ = 422829904.

The previous prime is 528537379. The next prime is 528537389. The reversal of 528537385 is 583735825.

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 185695129 + 342842256 = 13627^2 + 18516^2 .

It is a cyclic number.

It is not a de Polignac number, because 528537385 - 2³ = 528537377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528537389) 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, 52853734 + ... + 52853743.

It is an arithmetic number, because the mean of its divisors is an integer number (158561217).

Almost surely, 2^528537385 is an apocalyptic number.

It is an amenable number.

528537385 is a deficient number, since it is larger than the sum of its proper divisors (105707483).

528537385 is a wasteful number, since it uses less digits than its factorization.

528537385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105707482.

The product of its digits is 1008000, while the sum is 46.

The square root of 528537385 is about 22989.9409525123. The cubic root of 528537385 is about 808.5221159195.

The spelling of 528537385 in words is "five hundred twenty-eight million, five hundred thirty-seven thousand, three hundred eighty-five".