5721120 has 144 divisors (see below), whose sum is σ = 20343960. Its totient is φ = 1462272.

The previous prime is 5721119. The next prime is 5721127. The reversal of 5721120 is 211275.

It can be written as a sum of positive squares in 4 ways, for example, as 4822416 + 898704 = 2196^2 + 948^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 5721093 and 5721102.

It is not an unprimeable number, because it can be changed into a prime (5721127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41692 + ... + 41828.

Almost surely, 2^5721120 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 5721120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10171980).

5721120 is an abundant number, since it is smaller than the sum of its proper divisors (14622840).

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

5721120 is a wasteful number, since it uses less digits than its factorization.

5721120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 5721120 is about 2391.8862849224. The cubic root of 5721120 is about 178.8519525322.

Adding to 5721120 its reverse (211275), we get a palindrome (5932395).

The spelling of 5721120 in words is "five million, seven hundred twenty-one thousand, one hundred twenty".