65528161 has 2 divisors, whose sum is σ = 65528162. Its totient is φ = 65528160.

The previous prime is 65528153. The next prime is 65528167. The reversal of 65528161 is 16182556.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36529936 + 28998225 = 6044^2 + 5385^2 .

It is a cyclic number.

It is not a de Polignac number, because 65528161 - 2³ = 65528153 is a prime.

It is not a weakly prime, because it can be changed into another prime (65528167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32764080 + 32764081.

It is an arithmetic number, because the mean of its divisors is an integer number (32764081).

Almost surely, 2^65528161 is an apocalyptic number.

It is an amenable number.

65528161 is a deficient number, since it is larger than the sum of its proper divisors (1).

65528161 is an equidigital number, since it uses as much as digits as its factorization.

65528161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 34.

The square root of 65528161 is about 8094.9466335486. The cubic root of 65528161 is about 403.1586602585.

The spelling of 65528161 in words is "sixty-five million, five hundred twenty-eight thousand, one hundred sixty-one".