515102113 has 2 divisors, whose sum is σ = 515102114. Its totient is φ = 515102112.

The previous prime is 515102111. The next prime is 515102129. The reversal of 515102113 is 311201515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433597329 + 81504784 = 20823^2 + 9028^2 .

It is a cyclic number.

It is not a de Polignac number, because 515102113 - 2¹ = 515102111 is a prime.

Together with 515102111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (515102111) 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, 257551056 + 257551057.

It is an arithmetic number, because the mean of its divisors is an integer number (257551057).

Almost surely, 2^515102113 is an apocalyptic number.

It is an amenable number.

515102113 is a deficient number, since it is larger than the sum of its proper divisors (1).

515102113 is an equidigital number, since it uses as much as digits as its factorization.

515102113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 515102113 is about 22695.8611425079. The cubic root of 515102113 is about 801.6124317505.

Adding to 515102113 its reverse (311201515), we get a palindrome (826303628).

The spelling of 515102113 in words is "five hundred fifteen million, one hundred two thousand, one hundred thirteen".