513870113 has 2 divisors, whose sum is σ = 513870114. Its totient is φ = 513870112.

The previous prime is 513870109. The next prime is 513870187. The reversal of 513870113 is 311078315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322130704 + 191739409 = 17948^2 + 13847^2 .

It is a cyclic number.

It is not a de Polignac number, because 513870113 - 2² = 513870109 is a prime.

It is equal to p_27047036 and since 513870113 and 27047036 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (513870613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256935056 + 256935057.

It is an arithmetic number, because the mean of its divisors is an integer number (256935057).

Almost surely, 2^513870113 is an apocalyptic number.

It is an amenable number.

513870113 is a deficient number, since it is larger than the sum of its proper divisors (1).

513870113 is an equidigital number, since it uses as much as digits as its factorization.

513870113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 513870113 is about 22668.7033815346. The cubic root of 513870113 is about 800.9728337012.

The spelling of 513870113 in words is "five hundred thirteen million, eight hundred seventy thousand, one hundred thirteen".