5240666549 has 2 divisors, whose sum is σ = 5240666550. Its totient is φ = 5240666548.

The previous prime is 5240666539. The next prime is 5240666611. The reversal of 5240666549 is 9456660425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4904200900 + 336465649 = 70030^2 + 18343^2 .

It is a cyclic number.

It is not a de Polignac number, because 5240666549 - 2³² = 945699253 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 (5240666539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2620333274 + 2620333275.

It is an arithmetic number, because the mean of its divisors is an integer number (2620333275).

Almost surely, 2^5240666549 is an apocalyptic number.

It is an amenable number.

5240666549 is a deficient number, since it is larger than the sum of its proper divisors (1).

5240666549 is an equidigital number, since it uses as much as digits as its factorization.

5240666549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The square root of 5240666549 is about 72392.4481489610. The cubic root of 5240666549 is about 1736.9827646879.

The spelling of 5240666549 in words is "five billion, two hundred forty million, six hundred sixty-six thousand, five hundred forty-nine".