6551300421 has 24 divisors (see below), whose sum is σ = 10037378520. Its totient is φ = 4103341056.

The previous prime is 6551300417. The next prime is 6551300507. The reversal of 6551300421 is 1240031556.

6551300421 is a `hidden beast` number, since 655 + 1 + 3 + 0 + 0 + 4 + 2 + 1 = 666.

6551300421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1297080225 + 5254220196 = 36015^2 + 72486^2 .

It is not a de Polignac number, because 6551300421 - 2² = 6551300417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551300411) 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 23 ways as a sum of consecutive naturals, for example, 49431 + ... + 124683.

It is an arithmetic number, because the mean of its divisors is an integer number (418224105).

Almost surely, 2^6551300421 is an apocalyptic number.

It is an amenable number.

6551300421 is a deficient number, since it is larger than the sum of its proper divisors (3486078099).

6551300421 is a wasteful number, since it uses less digits than its factorization.

6551300421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75845 (or 75842 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6551300421 is about 80940.1039102372. The cubic root of 6551300421 is about 1871.1524463235.

Adding to 6551300421 its reverse (1240031556), we get a palindrome (7791331977).

The spelling of 6551300421 in words is "six billion, five hundred fifty-one million, three hundred thousand, four hundred twenty-one".