528586081 has 9 divisors (see below), whose sum is σ = 536969811. Its totient is φ = 520332312.

The previous prime is 528586073. The next prime is 528586109. The reversal of 528586081 is 180685825.

The square root of 528586081 is 22991.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 437479056 = 9545^2 + 20916^2 .

It is not a de Polignac number, because 528586081 - 2³ = 528586073 is a prime.

It is a super-2 number, since 2×528586081² = 558806490053877122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528586001) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1908115 + ... + 1908391.

Almost surely, 2^528586081 is an apocalyptic number.

528586081 is the 22991-st square number.

528586081 is the 11496-th centered octagonal number.

It is an amenable number.

528586081 is a deficient number, since it is larger than the sum of its proper divisors (8383730).

528586081 is an frugal number, since it uses more digits than its factorization.

528586081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 43.

The cubic root of 528586081 is about 808.5469458149.

The spelling of 528586081 in words is "five hundred twenty-eight million, five hundred eighty-six thousand, eighty-one".