65251601 has 2 divisors, whose sum is σ = 65251602. Its totient is φ = 65251600.

The previous prime is 65251591. The next prime is 65251607. The reversal of 65251601 is 10615256.

65251601 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., 37699600 + 27552001 = 6140^2 + 5249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65251601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65251607) 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, 32625800 + 32625801.

It is an arithmetic number, because the mean of its divisors is an integer number (32625801).

Almost surely, 2^65251601 is an apocalyptic number.

It is an amenable number.

65251601 is a deficient number, since it is larger than the sum of its proper divisors (1).

65251601 is an equidigital number, since it uses as much as digits as its factorization.

65251601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 65251601 is about 8077.8463095060. The cubic root of 65251601 is about 402.5906867146.

Adding to 65251601 its reverse (10615256), we get a palindrome (75866857).

The spelling of 65251601 in words is "sixty-five million, two hundred fifty-one thousand, six hundred one".