5173921 has 4 divisors (see below), whose sum is σ = 5188932. Its totient is φ = 5158912.

The previous prime is 5173907. The next prime is 5173937. The reversal of 5173921 is 1293715.

5173921 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 an emirpimes, since its reverse is a distinct semiprime: 1293715 = 5 ⋅258743.

It can be written as a sum of positive squares in 2 ways, for example, as 4100625 + 1073296 = 2025^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 5173921 - 2⁹ = 5173409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5173921.

It is not an unprimeable number, because it can be changed into a prime (5173951) 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, 6976 + ... + 7681.

It is an arithmetic number, because the mean of its divisors is an integer number (1297233).

Almost surely, 2^5173921 is an apocalyptic number.

It is an amenable number.

5173921 is a deficient number, since it is larger than the sum of its proper divisors (15011).

5173921 is a wasteful number, since it uses less digits than its factorization.

5173921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15010.

The product of its digits is 1890, while the sum is 28.

The square root of 5173921 is about 2274.6254636753. The cubic root of 5173921 is about 172.9577118286.

The spelling of 5173921 in words is "five million, one hundred seventy-three thousand, nine hundred twenty-one".