515113897 has 4 divisors (see below), whose sum is σ = 515159380. Its totient is φ = 515068416.

The previous prime is 515113871. The next prime is 515113913. The reversal of 515113897 is 798311515.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 354230041 + 160883856 = 18821^2 + 12684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515113897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515113817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9229 + ... + 33397.

It is an arithmetic number, because the mean of its divisors is an integer number (128789845).

Almost surely, 2^515113897 is an apocalyptic number.

It is an amenable number.

515113897 is a deficient number, since it is larger than the sum of its proper divisors (45483).

515113897 is a wasteful number, since it uses less digits than its factorization.

515113897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45482.

The product of its digits is 37800, while the sum is 40.

The square root of 515113897 is about 22696.1207478283. The cubic root of 515113897 is about 801.6185445378.

The spelling of 515113897 in words is "five hundred fifteen million, one hundred thirteen thousand, eight hundred ninety-seven".