5355543721 has 16 divisors (see below), whose sum is σ = 6106272768. Its totient is φ = 4649475600.

The previous prime is 5355543707. The next prime is 5355543731. The reversal of 5355543721 is 1273455535.

It is a happy number.

It is not a de Polignac number, because 5355543721 - 2⁹ = 5355543209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5355543731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142870 + ... + 176416.

It is an arithmetic number, because the mean of its divisors is an integer number (381642048).

Almost surely, 2^5355543721 is an apocalyptic number.

It is an amenable number.

5355543721 is a deficient number, since it is larger than the sum of its proper divisors (750729047).

5355543721 is a wasteful number, since it uses less digits than its factorization.

5355543721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34212.

The product of its digits is 315000, while the sum is 40.

The square root of 5355543721 is about 73181.5804762373. The cubic root of 5355543721 is about 1749.5828906314.

The spelling of 5355543721 in words is "five billion, three hundred fifty-five million, five hundred forty-three thousand, seven hundred twenty-one".