6554232821 has 2 divisors, whose sum is σ = 6554232822. Its totient is φ = 6554232820.

The previous prime is 6554232793. The next prime is 6554232827. The reversal of 6554232821 is 1282324556.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5225265796 + 1328967025 = 72286^2 + 36455^2 .

It is a cyclic number.

It is not a de Polignac number, because 6554232821 - 2¹⁸ = 6553970677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6554232827) 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 as a sum of consecutive naturals, namely, 3277116410 + 3277116411.

It is an arithmetic number, because the mean of its divisors is an integer number (3277116411).

Almost surely, 2^6554232821 is an apocalyptic number.

It is an amenable number.

6554232821 is a deficient number, since it is larger than the sum of its proper divisors (1).

6554232821 is an equidigital number, since it uses as much as digits as its factorization.

6554232821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 38.

The square root of 6554232821 is about 80958.2165132113. The cubic root of 6554232821 is about 1871.4315842360.

The spelling of 6554232821 in words is "six billion, five hundred fifty-four million, two hundred thirty-two thousand, eight hundred twenty-one".