513140549 has 2 divisors, whose sum is σ = 513140550. Its totient is φ = 513140548.

The previous prime is 513140539. The next prime is 513140623. The reversal of 513140549 is 945041315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511890625 + 1249924 = 22625^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 513140549 - 2⁴ = 513140533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513140539) 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, 256570274 + 256570275.

It is an arithmetic number, because the mean of its divisors is an integer number (256570275).

Almost surely, 2^513140549 is an apocalyptic number.

It is an amenable number.

513140549 is a deficient number, since it is larger than the sum of its proper divisors (1).

513140549 is an equidigital number, since it uses as much as digits as its factorization.

513140549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 513140549 is about 22652.6057882973. The cubic root of 513140549 is about 800.5935953842.

The spelling of 513140549 in words is "five hundred thirteen million, one hundred forty thousand, five hundred forty-nine".