5173721 has 4 divisors (see below), whose sum is σ = 5912832. Its totient is φ = 4434612.

The previous prime is 5173711. The next prime is 5173723. The reversal of 5173721 is 1273715.

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 5173721 - 2⁶ = 5173657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5173723) 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, 369545 + ... + 369558.

It is an arithmetic number, because the mean of its divisors is an integer number (1478208).

Almost surely, 2^5173721 is an apocalyptic number.

It is an amenable number.

5173721 is a deficient number, since it is larger than the sum of its proper divisors (739111).

5173721 is an equidigital number, since it uses as much as digits as its factorization.

5173721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739110.

The product of its digits is 1470, while the sum is 26.

The square root of 5173721 is about 2274.5814999687. The cubic root of 5173721 is about 172.9554832165.

The spelling of 5173721 in words is "five million, one hundred seventy-three thousand, seven hundred twenty-one".