513240617 has 2 divisors, whose sum is σ = 513240618. Its totient is φ = 513240616.

The previous prime is 513240601. The next prime is 513240649. The reversal of 513240617 is 716042315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282777856 + 230462761 = 16816^2 + 15181^2 .

It is a cyclic number.

It is not a de Polignac number, because 513240617 - 2⁴ = 513240601 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513240617.

It is not a weakly prime, because it can be changed into another prime (513240697) 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, 256620308 + 256620309.

It is an arithmetic number, because the mean of its divisors is an integer number (256620309).

Almost surely, 2^513240617 is an apocalyptic number.

It is an amenable number.

513240617 is a deficient number, since it is larger than the sum of its proper divisors (1).

513240617 is an equidigital number, since it uses as much as digits as its factorization.

513240617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 513240617 is about 22654.8144331398. The cubic root of 513240617 is about 800.6456334941.

The spelling of 513240617 in words is "five hundred thirteen million, two hundred forty thousand, six hundred seventeen".