64241549 has 2 divisors, whose sum is σ = 64241550. Its totient is φ = 64241548.

The previous prime is 64241531. The next prime is 64241557. The reversal of 64241549 is 94514246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47513449 + 16728100 = 6893^2 + 4090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64241549 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 (64240549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32120774 + 32120775.

It is an arithmetic number, because the mean of its divisors is an integer number (32120775).

Almost surely, 2^64241549 is an apocalyptic number.

It is an amenable number.

64241549 is a deficient number, since it is larger than the sum of its proper divisors (1).

64241549 is an equidigital number, since it uses as much as digits as its factorization.

64241549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 64241549 is about 8015.0825947086. The cubic root of 64241549 is about 400.5025953137.

The spelling of 64241549 in words is "sixty-four million, two hundred forty-one thousand, five hundred forty-nine".