5115865 has 4 divisors (see below), whose sum is σ = 6139044. Its totient is φ = 4092688.

The previous prime is 5115863. The next prime is 5115881. The reversal of 5115865 is 5685115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2862864 + 2253001 = 1692^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 5115865 - 2¹ = 5115863 is a prime.

It is a Duffinian number.

5115865 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5115863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511582 + ... + 511591.

It is an arithmetic number, because the mean of its divisors is an integer number (1534761).

Almost surely, 2^5115865 is an apocalyptic number.

It is an amenable number.

5115865 is a deficient number, since it is larger than the sum of its proper divisors (1023179).

5115865 is a wasteful number, since it uses less digits than its factorization.

5115865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023178.

The product of its digits is 6000, while the sum is 31.

The square root of 5115865 is about 2261.8278006957. The cubic root of 5115865 is about 172.3083638132.

The spelling of 5115865 in words is "five million, one hundred fifteen thousand, eight hundred sixty-five".