515560013 has 4 divisors (see below), whose sum is σ = 515605440. Its totient is φ = 515514588.

The previous prime is 515560007. The next prime is 515560021. The reversal of 515560013 is 310065515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 310065515 = 5 ⋅62013103.

It is a cyclic number.

It is not a de Polignac number, because 515560013 - 2²⁶ = 448451149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515560033) 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 in 3 ways as a sum of consecutive naturals, for example, 10508 + ... + 33786.

It is an arithmetic number, because the mean of its divisors is an integer number (128901360).

Almost surely, 2^515560013 is an apocalyptic number.

It is an amenable number.

515560013 is a deficient number, since it is larger than the sum of its proper divisors (45427).

515560013 is a wasteful number, since it uses less digits than its factorization.

515560013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45426.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 515560013 is about 22705.9466439961. The cubic root of 515560013 is about 801.8498925125.

The spelling of 515560013 in words is "five hundred fifteen million, five hundred sixty thousand, thirteen".