6553221839 has 8 divisors (see below), whose sum is σ = 6778236192. Its totient is φ = 6331311360.

The previous prime is 6553221823. The next prime is 6553221841. The reversal of 6553221839 is 9381223556.

6553221839 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 6553221839 - 2⁴ = 6553221823 is a prime.

It is a super-2 number, since 2×6553221839² = 85889432942293083842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6553221839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6553211839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771674 + ... + 780119.

It is an arithmetic number, because the mean of its divisors is an integer number (847279524).

Almost surely, 2^6553221839 is an apocalyptic number.

6553221839 is a deficient number, since it is larger than the sum of its proper divisors (225014353).

6553221839 is a wasteful number, since it uses less digits than its factorization.

6553221839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551937.

The product of its digits is 388800, while the sum is 44.

The square root of 6553221839 is about 80951.9724219243. The cubic root of 6553221839 is about 1871.3353573149.

The spelling of 6553221839 in words is "six billion, five hundred fifty-three million, two hundred twenty-one thousand, eight hundred thirty-nine".