65526217 has 2 divisors, whose sum is σ = 65526218. Its totient is φ = 65526216.

The previous prime is 65526199. The next prime is 65526221. The reversal of 65526217 is 71262556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45643536 + 19882681 = 6756^2 + 4459^2 .

It is a cyclic number.

It is not a de Polignac number, because 65526217 - 2⁷ = 65526089 is a prime.

It is a super-2 number, since 2×65526217² = 8587370228662178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65526317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32763108 + 32763109.

It is an arithmetic number, because the mean of its divisors is an integer number (32763109).

Almost surely, 2^65526217 is an apocalyptic number.

It is an amenable number.

65526217 is a deficient number, since it is larger than the sum of its proper divisors (1).

65526217 is an equidigital number, since it uses as much as digits as its factorization.

65526217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 65526217 is about 8094.8265577466. The cubic root of 65526217 is about 403.1546734322.

It can be divided in two parts, 6552 and 6217, that added together give a square (12769 = 113²).

The spelling of 65526217 in words is "sixty-five million, five hundred twenty-six thousand, two hundred seventeen".