528378531 has 4 divisors (see below), whose sum is σ = 704504712. Its totient is φ = 352252352.

The previous prime is 528378509. The next prime is 528378541. The reversal of 528378531 is 135873825.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 528378531 - 2¹¹ = 528376483 is a prime.

It is a super-2 number, since 2×528378531² = 558367744043435922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (528378541) 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, 88063086 + ... + 88063091.

It is an arithmetic number, because the mean of its divisors is an integer number (176126178).

Almost surely, 2^528378531 is an apocalyptic number.

528378531 is a deficient number, since it is larger than the sum of its proper divisors (176126181).

528378531 is a wasteful number, since it uses less digits than its factorization.

528378531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176126180.

The product of its digits is 201600, while the sum is 42.

The square root of 528378531 is about 22986.4858340722. The cubic root of 528378531 is about 808.4411062972.

The spelling of 528378531 in words is "five hundred twenty-eight million, three hundred seventy-eight thousand, five hundred thirty-one".