5351721 has 4 divisors (see below), whose sum is σ = 7135632. Its totient is φ = 3567812.

The previous prime is 5351701. The next prime is 5351729. The reversal of 5351721 is 1271535.

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 5351721 - 2⁶ = 5351657 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5351691 and 5351700.

It is not an unprimeable number, because it can be changed into a prime (5351729) 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, 891951 + ... + 891956.

It is an arithmetic number, because the mean of its divisors is an integer number (1783908).

Almost surely, 2^5351721 is an apocalyptic number.

It is an amenable number.

5351721 is a deficient number, since it is larger than the sum of its proper divisors (1783911).

5351721 is a wasteful number, since it uses less digits than its factorization.

5351721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783910.

The product of its digits is 1050, while the sum is 24.

The square root of 5351721 is about 2313.3786979222. The cubic root of 5351721 is about 174.9166514657.

The spelling of 5351721 in words is "five million, three hundred fifty-one thousand, seven hundred twenty-one".