65000549 has 2 divisors, whose sum is σ = 65000550. Its totient is φ = 65000548.

The previous prime is 65000473. The next prime is 65000561. The reversal of 65000549 is 94500056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 1288225 = 7982^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 65000549 - 2²⁴ = 48223333 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65000569) 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, 32500274 + 32500275.

It is an arithmetic number, because the mean of its divisors is an integer number (32500275).

Almost surely, 2^65000549 is an apocalyptic number.

It is an amenable number.

65000549 is a deficient number, since it is larger than the sum of its proper divisors (1).

65000549 is an equidigital number, since it uses as much as digits as its factorization.

65000549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 65000549 is about 8062.2917957613. The cubic root of 65000549 is about 402.0737078447.

The spelling of 65000549 in words is "sixty-five million, five hundred forty-nine", and thus it is an aban number.