65921041 has 2 divisors, whose sum is σ = 65921042. Its totient is φ = 65921040.

The previous prime is 65921039. The next prime is 65921083. The reversal of 65921041 is 14012956.

65921041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55935441 + 9985600 = 7479^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 65921041 - 2¹ = 65921039 is a prime.

Together with 65921039, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65922041) 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, 32960520 + 32960521.

It is an arithmetic number, because the mean of its divisors is an integer number (32960521).

Almost surely, 2^65921041 is an apocalyptic number.

It is an amenable number.

65921041 is a deficient number, since it is larger than the sum of its proper divisors (1).

65921041 is an equidigital number, since it uses as much as digits as its factorization.

65921041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 65921041 is about 8119.1773598068. The cubic root of 65921041 is about 403.9627800400.

Adding to 65921041 its reverse (14012956), we get a palindrome (79933997).

The spelling of 65921041 in words is "sixty-five million, nine hundred twenty-one thousand, forty-one".