5115978 has 48 divisors (see below), whose sum is σ = 13341120. Its totient is φ = 1384128.

The previous prime is 5115947. The next prime is 5116039. The reversal of 5115978 is 8795115.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1326 + ... + 3462.

It is an arithmetic number, because the mean of its divisors is an integer number (277940).

Almost surely, 2^5115978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5115978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6670560).

5115978 is an abundant number, since it is smaller than the sum of its proper divisors (8225142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5115978 is a wasteful number, since it uses less digits than its factorization.

5115978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171 (or 2168 counting only the distinct ones).

The product of its digits is 12600, while the sum is 36.

The square root of 5115978 is about 2261.8527803551. The cubic root of 5115978 is about 172.3096324616.

The spelling of 5115978 in words is "five million, one hundred fifteen thousand, nine hundred seventy-eight".