65009257 has 2 divisors, whose sum is σ = 65009258. Its totient is φ = 65009256.

The previous prime is 65009177. The next prime is 65009261. The reversal of 65009257 is 75290056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51897616 + 13111641 = 7204^2 + 3621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65009257 is a prime.

It is not a weakly prime, because it can be changed into another prime (65009267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32504628 + 32504629.

It is an arithmetic number, because the mean of its divisors is an integer number (32504629).

Almost surely, 2^65009257 is an apocalyptic number.

It is an amenable number.

65009257 is a deficient number, since it is larger than the sum of its proper divisors (1).

65009257 is an equidigital number, since it uses as much as digits as its factorization.

65009257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 65009257 is about 8062.8318226291. The cubic root of 65009257 is about 402.0916620597.

The spelling of 65009257 in words is "sixty-five million, nine thousand, two hundred fifty-seven".