5118991 has 4 divisors (see below), whose sum is σ = 5145984. Its totient is φ = 5092000.

The previous prime is 5118959. The next prime is 5119007. The reversal of 5118991 is 1998115.

5118991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 5118991 - 2⁵ = 5118959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5118901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13210 + ... + 13591.

It is an arithmetic number, because the mean of its divisors is an integer number (1286496).

Almost surely, 2^5118991 is an apocalyptic number.

5118991 is a deficient number, since it is larger than the sum of its proper divisors (26993).

5118991 is a wasteful number, since it uses less digits than its factorization.

5118991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26992.

The product of its digits is 3240, while the sum is 34.

The square root of 5118991 is about 2262.5187292042. The cubic root of 5118991 is about 172.3434524556.

The spelling of 5118991 in words is "five million, one hundred eighteen thousand, nine hundred ninety-one".