528395081 has 4 divisors (see below), whose sum is σ = 528475332. Its totient is φ = 528314832.

The previous prime is 528395053. The next prime is 528395099. The reversal of 528395081 is 180593825.

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 387735481 + 140659600 = 19691^2 + 11860^2 .

It is a cyclic number.

It is not a de Polignac number, because 528395081 - 2²² = 524200777 is a prime.

It is a super-2 number, since 2×528395081² = 558402723249993122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528395981) 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, 29270 + ... + 43743.

It is an arithmetic number, because the mean of its divisors is an integer number (132118833).

Almost surely, 2^528395081 is an apocalyptic number.

It is an amenable number.

528395081 is a deficient number, since it is larger than the sum of its proper divisors (80251).

528395081 is an equidigital number, since it uses as much as digits as its factorization.

528395081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80250.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 528395081 is about 22986.8458253846. The cubic root of 528395081 is about 808.4495469383.

The spelling of 528395081 in words is "five hundred twenty-eight million, three hundred ninety-five thousand, eighty-one".