5156121 has 4 divisors (see below), whose sum is σ = 6874832. Its totient is φ = 3437412.

The previous prime is 5156111. The next prime is 5156141. The reversal of 5156121 is 1216515.

5156121 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5156121 - 2⁵ = 5156089 is a prime.

It is a D-number.

It is a Duffinian number.

5156121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5156101) 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, 859351 + ... + 859356.

It is an arithmetic number, because the mean of its divisors is an integer number (1718708).

Almost surely, 2^5156121 is an apocalyptic number.

It is an amenable number.

5156121 is a deficient number, since it is larger than the sum of its proper divisors (1718711).

5156121 is a wasteful number, since it uses less digits than its factorization.

5156121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718710.

The product of its digits is 300, while the sum is 21.

The square root of 5156121 is about 2270.7093605303. The cubic root of 5156121 is about 172.7591400197.

The spelling of 5156121 in words is "five million, one hundred fifty-six thousand, one hundred twenty-one".