65051081 has 2 divisors, whose sum is σ = 65051082. Its totient is φ = 65051080.

The previous prime is 65051053. The next prime is 65051083. The reversal of 65051081 is 18015056.

65051081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48372025 + 16679056 = 6955^2 + 4084^2 .

It is a cyclic number.

It is not a de Polignac number, because 65051081 - 2⁶ = 65051017 is a prime.

It is a super-2 number, since 2×65051081² = 8463286278537122, which contains 22 as substring.

Together with 65051083, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65051081.

It is not a weakly prime, because it can be changed into another prime (65051083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32525540 + 32525541.

It is an arithmetic number, because the mean of its divisors is an integer number (32525541).

Almost surely, 2^65051081 is an apocalyptic number.

It is an amenable number.

65051081 is a deficient number, since it is larger than the sum of its proper divisors (1).

65051081 is an equidigital number, since it uses as much as digits as its factorization.

65051081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 65051081 is about 8065.4250352973. The cubic root of 65051081 is about 402.1778727385.

The spelling of 65051081 in words is "sixty-five million, fifty-one thousand, eighty-one".