6533546421 has 8 divisors (see below), whose sum is σ = 8720032960. Its totient is φ = 4351378752.

The previous prime is 6533546363. The next prime is 6533546447. The reversal of 6533546421 is 1246453356.

6533546421 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 not a de Polignac number, because 6533546421 - 2¹⁰ = 6533545397 is a prime.

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 6533546421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6533546491) 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, 1076185 + ... + 1082238.

It is an arithmetic number, because the mean of its divisors is an integer number (1090004120).

Almost surely, 2^6533546421 is an apocalyptic number.

It is an amenable number.

6533546421 is a deficient number, since it is larger than the sum of its proper divisors (2186486539).

6533546421 is a wasteful number, since it uses less digits than its factorization.

6533546421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159435.

The product of its digits is 259200, while the sum is 39.

The square root of 6533546421 is about 80830.3558138896. The cubic root of 6533546421 is about 1869.4606450653.

Adding to 6533546421 its reverse (1246453356), we get a palindrome (7779999777).

The spelling of 6533546421 in words is "six billion, five hundred thirty-three million, five hundred forty-six thousand, four hundred twenty-one".