65091517 has 2 divisors, whose sum is σ = 65091518. Its totient is φ = 65091516.

The previous prime is 65091493. The next prime is 65091529. The reversal of 65091517 is 71519056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 5044516 = 7749^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 65091517 - 2¹⁹ = 64567229 is a prime.

It is a super-2 number, since 2×65091517² = 8473811170722578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65091557) 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, 32545758 + 32545759.

It is an arithmetic number, because the mean of its divisors is an integer number (32545759).

Almost surely, 2^65091517 is an apocalyptic number.

It is an amenable number.

65091517 is a deficient number, since it is larger than the sum of its proper divisors (1).

65091517 is an equidigital number, since it uses as much as digits as its factorization.

65091517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 65091517 is about 8067.9313953454. The cubic root of 65091517 is about 402.2611872444.

The spelling of 65091517 in words is "sixty-five million, ninety-one thousand, five hundred seventeen".