6552662561 has 2 divisors, whose sum is σ = 6552662562. Its totient is φ = 6552662560.

The previous prime is 6552662539. The next prime is 6552662587. The reversal of 6552662561 is 1652662556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6079164961 + 473497600 = 77969^2 + 21760^2 .

It is a cyclic number.

It is not a de Polignac number, because 6552662561 - 2¹⁸ = 6552400417 is a prime.

It is not a weakly prime, because it can be changed into another prime (6552662161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3276331280 + 3276331281.

It is an arithmetic number, because the mean of its divisors is an integer number (3276331281).

Almost surely, 2^6552662561 is an apocalyptic number.

It is an amenable number.

6552662561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6552662561 is an equidigital number, since it uses as much as digits as its factorization.

6552662561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 44.

The square root of 6552662561 is about 80948.5179666682. The cubic root of 6552662561 is about 1871.2821200678.

The spelling of 6552662561 in words is "six billion, five hundred fifty-two million, six hundred sixty-two thousand, five hundred sixty-one".