513249973 has 2 divisors, whose sum is σ = 513249974. Its totient is φ = 513249972.

The previous prime is 513249929. The next prime is 513250093. The reversal of 513249973 is 379942315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499164964 + 14085009 = 22342^2 + 3753^2 .

It is a cyclic number.

It is not a de Polignac number, because 513249973 - 2⁹ = 513249461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513249073) 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, 256624986 + 256624987.

It is an arithmetic number, because the mean of its divisors is an integer number (256624987).

Almost surely, 2^513249973 is an apocalyptic number.

It is an amenable number.

513249973 is a deficient number, since it is larger than the sum of its proper divisors (1).

513249973 is an equidigital number, since it uses as much as digits as its factorization.

513249973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 513249973 is about 22655.0209225240. The cubic root of 513249973 is about 800.6504985254.

The spelling of 513249973 in words is "five hundred thirteen million, two hundred forty-nine thousand, nine hundred seventy-three".