515491713 has 24 divisors (see below), whose sum is σ = 814753056. Its totient is φ = 311472000.

The previous prime is 515491703. The next prime is 515491741. The reversal of 515491713 is 317194515.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-515491713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (515491703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25638 + ... + 41088.

It is an arithmetic number, because the mean of its divisors is an integer number (33948044).

Almost surely, 2^515491713 is an apocalyptic number.

It is an amenable number.

515491713 is a deficient number, since it is larger than the sum of its proper divisors (299261343).

515491713 is a wasteful number, since it uses less digits than its factorization.

515491713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15805 (or 15802 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 515491713 is about 22704.4425828955. The cubic root of 515491713 is about 801.8144819784.

The spelling of 515491713 in words is "five hundred fifteen million, four hundred ninety-one thousand, seven hundred thirteen".