515216117 has 16 divisors (see below), whose sum is σ = 581280000. Its totient is φ = 453345984.

The previous prime is 515216111. The next prime is 515216159. The reversal of 515216117 is 711612515.

It is not a de Polignac number, because 515216117 - 2⁴ = 515216101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 515216117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515216111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21134 + ... + 38432.

It is an arithmetic number, because the mean of its divisors is an integer number (36330000).

Almost surely, 2^515216117 is an apocalyptic number.

It is an amenable number.

515216117 is a deficient number, since it is larger than the sum of its proper divisors (66063883).

515216117 is a wasteful number, since it uses less digits than its factorization.

515216117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17420.

The product of its digits is 2100, while the sum is 29.

The square root of 515216117 is about 22698.3725628072. The cubic root of 515216117 is about 801.6715658395.

The spelling of 515216117 in words is "five hundred fifteen million, two hundred sixteen thousand, one hundred seventeen".