5118121 has 4 divisors (see below), whose sum is σ = 5340672. Its totient is φ = 4895572.

The previous prime is 5118107. The next prime is 5118143. The reversal of 5118121 is 1218115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1218115 = 5 ⋅243623.

It is a cyclic number.

It is not a de Polignac number, because 5118121 - 2⁵ = 5118089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5118101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111241 + ... + 111286.

It is an arithmetic number, because the mean of its divisors is an integer number (1335168).

Almost surely, 2^5118121 is an apocalyptic number.

It is an amenable number.

5118121 is a deficient number, since it is larger than the sum of its proper divisors (222551).

5118121 is a wasteful number, since it uses less digits than its factorization.

5118121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222550.

The product of its digits is 80, while the sum is 19.

The square root of 5118121 is about 2262.3264574327. The cubic root of 5118121 is about 172.3336883374. Note that the first 3 decimals are identical.

The spelling of 5118121 in words is "five million, one hundred eighteen thousand, one hundred twenty-one".