528378533 has 4 divisors (see below), whose sum is σ = 528458028. Its totient is φ = 528299040.

The previous prime is 528378509. The next prime is 528378541. The reversal of 528378533 is 335873825.

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 15038884 + 513339649 = 3878^2 + 22657^2 .

It is a cyclic number.

It is not a de Polignac number, because 528378533 - 2²⁸ = 259943077 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 (528378553) 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 3 ways as a sum of consecutive naturals, for example, 28766 + ... + 43407.

It is an arithmetic number, because the mean of its divisors is an integer number (132114507).

Almost surely, 2^528378533 is an apocalyptic number.

It is an amenable number.

528378533 is a deficient number, since it is larger than the sum of its proper divisors (79495).

528378533 is an equidigital number, since it uses as much as digits as its factorization.

528378533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79494.

The product of its digits is 604800, while the sum is 44.

The square root of 528378533 is about 22986.4858775760. The cubic root of 528378533 is about 808.4411073173.

The spelling of 528378533 in words is "five hundred twenty-eight million, three hundred seventy-eight thousand, five hundred thirty-three".