5123121 has 4 divisors (see below), whose sum is σ = 6830832. Its totient is φ = 3415412.

The previous prime is 5123119. The next prime is 5123143. The reversal of 5123121 is 1213215.

5123121 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 a cyclic number.

It is not a de Polignac number, because 5123121 - 2¹ = 5123119 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 5123121.

It is not an unprimeable number, because it can be changed into a prime (5123191) 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, 853851 + ... + 853856.

It is an arithmetic number, because the mean of its divisors is an integer number (1707708).

Almost surely, 2^5123121 is an apocalyptic number.

It is an amenable number.

5123121 is a deficient number, since it is larger than the sum of its proper divisors (1707711).

5123121 is a wasteful number, since it uses less digits than its factorization.

5123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707710.

The product of its digits is 60, while the sum is 15.

The square root of 5123121 is about 2263.4312448139. The cubic root of 5123121 is about 172.3897888738.

Adding to 5123121 its reverse (1213215), we get a palindrome (6336336).

The spelling of 5123121 in words is "five million, one hundred twenty-three thousand, one hundred twenty-one".