513544849 has 2 divisors, whose sum is σ = 513544850. Its totient is φ = 513544848.

The previous prime is 513544819. The next prime is 513544877. The reversal of 513544849 is 948445315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 490312449 + 23232400 = 22143^2 + 4820^2 .

It is a cyclic number.

It is not a de Polignac number, because 513544849 - 2¹³ = 513536657 is a prime.

It is not a weakly prime, because it can be changed into another prime (513544819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256772424 + 256772425.

It is an arithmetic number, because the mean of its divisors is an integer number (256772425).

Almost surely, 2^513544849 is an apocalyptic number.

It is an amenable number.

513544849 is a deficient number, since it is larger than the sum of its proper divisors (1).

513544849 is an equidigital number, since it uses as much as digits as its factorization.

513544849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 43.

The square root of 513544849 is about 22661.5279493683. The cubic root of 513544849 is about 800.8038009637.

The spelling of 513544849 in words is "five hundred thirteen million, five hundred forty-four thousand, eight hundred forty-nine".