65115289 has 2 divisors, whose sum is σ = 65115290. Its totient is φ = 65115288.

The previous prime is 65115247. The next prime is 65115329. The reversal of 65115289 is 98251156.

65115289 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., 63872064 + 1243225 = 7992^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 65115289 - 2⁷ = 65115161 is a prime.

It is not a weakly prime, because it can be changed into another prime (65115229) 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, 32557644 + 32557645.

It is an arithmetic number, because the mean of its divisors is an integer number (32557645).

Almost surely, 2^65115289 is an apocalyptic number.

It is an amenable number.

65115289 is a deficient number, since it is larger than the sum of its proper divisors (1).

65115289 is an equidigital number, since it uses as much as digits as its factorization.

65115289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 37.

The square root of 65115289 is about 8069.4045009530. The cubic root of 65115289 is about 402.3101510701.

The spelling of 65115289 in words is "sixty-five million, one hundred fifteen thousand, two hundred eighty-nine".