5721311 has 4 divisors (see below), whose sum is σ = 5726472. Its totient is φ = 5716152.

The previous prime is 5721307. The next prime is 5721343. The reversal of 5721311 is 1131275.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5721311 - 2² = 5721307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721371) 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, 161 + ... + 3386.

It is an arithmetic number, because the mean of its divisors is an integer number (1431618).

Almost surely, 2^5721311 is an apocalyptic number.

5721311 is a deficient number, since it is larger than the sum of its proper divisors (5161).

5721311 is a wasteful number, since it uses less digits than its factorization.

5721311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160.

The product of its digits is 210, while the sum is 20.

The square root of 5721311 is about 2391.9262112365. The cubic root of 5721311 is about 178.8539428384.

Adding to 5721311 its reverse (1131275), we get a palindrome (6852586).

The spelling of 5721311 in words is "five million, seven hundred twenty-one thousand, three hundred eleven".