6755401021 has 2 divisors, whose sum is σ = 6755401022. Its totient is φ = 6755401020.

The previous prime is 6755400997. The next prime is 6755401031. The reversal of 6755401021 is 1201045576.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6607413796 + 147987225 = 81286^2 + 12165^2 .

It is a cyclic number.

It is not a de Polignac number, because 6755401021 - 2⁵ = 6755400989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6755401031) 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, 3377700510 + 3377700511.

It is an arithmetic number, because the mean of its divisors is an integer number (3377700511).

Almost surely, 2^6755401021 is an apocalyptic number.

It is an amenable number.

6755401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6755401021 is an equidigital number, since it uses as much as digits as its factorization.

6755401021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 6755401021 is about 82191.2466203062. The cubic root of 6755401021 is about 1890.3855041670.

Adding to 6755401021 its reverse (1201045576), we get a palindrome (7956446597).

The spelling of 6755401021 in words is "six billion, seven hundred fifty-five million, four hundred one thousand, twenty-one".