528465661 has 2 divisors, whose sum is σ = 528465662. Its totient is φ = 528465660.

The previous prime is 528465653. The next prime is 528465667. The reversal of 528465661 is 166564825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470629636 + 57836025 = 21694^2 + 7605^2 .

It is a cyclic number.

It is not a de Polignac number, because 528465661 - 2³ = 528465653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (528465667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264232830 + 264232831.

It is an arithmetic number, because the mean of its divisors is an integer number (264232831).

Almost surely, 2^528465661 is an apocalyptic number.

It is an amenable number.

528465661 is a deficient number, since it is larger than the sum of its proper divisors (1).

528465661 is an equidigital number, since it uses as much as digits as its factorization.

528465661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 43.

The square root of 528465661 is about 22988.3809999747. The cubic root of 528465661 is about 808.4855413616.

The spelling of 528465661 in words is "five hundred twenty-eight million, four hundred sixty-five thousand, six hundred sixty-one".