528266561 has 2 divisors, whose sum is σ = 528266562. Its totient is φ = 528266560.

The previous prime is 528266521. The next prime is 528266569. The reversal of 528266561 is 165662825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280361536 + 247905025 = 16744^2 + 15745^2 .

It is a cyclic number.

It is not a de Polignac number, because 528266561 - 2²² = 524072257 is a prime.

It is not a weakly prime, because it can be changed into another prime (528266569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264133280 + 264133281.

It is an arithmetic number, because the mean of its divisors is an integer number (264133281).

Almost surely, 2^528266561 is an apocalyptic number.

It is an amenable number.

528266561 is a deficient number, since it is larger than the sum of its proper divisors (1).

528266561 is an equidigital number, since it uses as much as digits as its factorization.

528266561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 528266561 is about 22984.0501435234. The cubic root of 528266561 is about 808.3839960122.

The spelling of 528266561 in words is "five hundred twenty-eight million, two hundred sixty-six thousand, five hundred sixty-one".