5724005521 has 4 divisors (see below), whose sum is σ = 6164313652. Its totient is φ = 5283697392.

The previous prime is 5724005503. The next prime is 5724005533. The reversal of 5724005521 is 1255004275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 227859025 + 5496146496 = 15095^2 + 74136^2 .

It is a cyclic number.

It is not a de Polignac number, because 5724005521 - 2¹³ = 5723997329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5724005321) 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, 220154046 + ... + 220154071.

It is an arithmetic number, because the mean of its divisors is an integer number (1541078413).

Almost surely, 2^5724005521 is an apocalyptic number.

It is an amenable number.

5724005521 is a deficient number, since it is larger than the sum of its proper divisors (440308131).

5724005521 is a wasteful number, since it uses less digits than its factorization.

5724005521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440308130.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 5724005521 is about 75657.1577644839. The cubic root of 5724005521 is about 1788.8201624495.

Adding to 5724005521 its reverse (1255004275), we get a palindrome (6979009796).

The spelling of 5724005521 in words is "five billion, seven hundred twenty-four million, five thousand, five hundred twenty-one".