5721312 has 48 divisors (see below), whose sum is σ = 15280272. Its totient is φ = 1873920.

The previous prime is 5721307. The next prime is 5721343. The reversal of 5721312 is 2131275.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×5721312² = 65466822002688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5368 + ... + 6344.

It is an arithmetic number, because the mean of its divisors is an integer number (318339).

Almost surely, 2^5721312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5721312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7640136).

5721312 is an abundant number, since it is smaller than the sum of its proper divisors (9558960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5721312 is a wasteful number, since it uses less digits than its factorization.

5721312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 1043 counting only the distinct ones).

The product of its digits is 420, while the sum is 21.

The square root of 5721312 is about 2391.9264202730. The cubic root of 5721312 is about 178.8539532588.

Adding to 5721312 its reverse (2131275), we get a palindrome (7852587).

The spelling of 5721312 in words is "five million, seven hundred twenty-one thousand, three hundred twelve".