5115551917 has 16 divisors (see below), whose sum is σ = 5954936832. Its totient is φ = 4303862640.

The previous prime is 5115551899. The next prime is 5115551933. The reversal of 5115551917 is 7191555115.

It is a de Polignac number, because none of the positive numbers 2^k-5115551917 is a prime.

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 5115551917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5115551977) 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, 90148 + ... + 135490.

It is an arithmetic number, because the mean of its divisors is an integer number (372183552).

Almost surely, 2^5115551917 is an apocalyptic number.

It is an amenable number.

5115551917 is a deficient number, since it is larger than the sum of its proper divisors (839384915).

5115551917 is a wasteful number, since it uses less digits than its factorization.

5115551917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45648.

The product of its digits is 39375, while the sum is 40.

The square root of 5115551917 is about 71523.0866014604. The cubic root of 5115551917 is about 1723.0484873995.

The spelling of 5115551917 in words is "five billion, one hundred fifteen million, five hundred fifty-one thousand, nine hundred seventeen".