5447321821 has 8 divisors (see below), whose sum is σ = 5569728480. Its totient is φ = 5325642192.

The previous prime is 5447321813. The next prime is 5447321827. The reversal of 5447321821 is 1281237445.

5447321821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5447321821 - 2³ = 5447321813 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 (5447321827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166591 + ... + 196588.

It is an arithmetic number, because the mean of its divisors is an integer number (696216060).

Almost surely, 2^5447321821 is an apocalyptic number.

It is an amenable number.

5447321821 is a deficient number, since it is larger than the sum of its proper divisors (122406659).

5447321821 is a wasteful number, since it uses less digits than its factorization.

5447321821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363515.

The product of its digits is 53760, while the sum is 37.

The square root of 5447321821 is about 73805.9741552132. The cubic root of 5447321821 is about 1759.5205543438.

The spelling of 5447321821 in words is "five billion, four hundred forty-seven million, three hundred twenty-one thousand, eight hundred twenty-one".