513475609 has 2 divisors, whose sum is σ = 513475610. Its totient is φ = 513475608.

The previous prime is 513475579. The next prime is 513475639. The reversal of 513475609 is 906574315.

It is a balanced prime because it is at equal distance from previous prime (513475579) and next prime (513475639).

It can be written as a sum of positive squares in only one way, i.e., 513475600 + 9 = 22660^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 513475609 - 2⁵ = 513475577 is a prime.

It is not a weakly prime, because it can be changed into another prime (513475639) 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, 256737804 + 256737805.

It is an arithmetic number, because the mean of its divisors is an integer number (256737805).

Almost surely, 2^513475609 is an apocalyptic number.

It is an amenable number.

513475609 is a deficient number, since it is larger than the sum of its proper divisors (1).

513475609 is an equidigital number, since it uses as much as digits as its factorization.

513475609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 513475609 is about 22660.0001985878. Note that the first 3 decimals coincide. The cubic root of 513475609 is about 800.7678092047.

The spelling of 513475609 in words is "five hundred thirteen million, four hundred seventy-five thousand, six hundred nine".