6555555553 has 2 divisors, whose sum is σ = 6555555554. Its totient is φ = 6555555552.

The previous prime is 6555555547. The next prime is 6555555557. The reversal of 6555555553 is 3555555556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5944872609 + 610682944 = 77103^2 + 24712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6555555553 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6555555497 and 6555555506.

It is not a weakly prime, because it can be changed into another prime (6555555557) 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, 3277777776 + 3277777777.

It is an arithmetic number, because the mean of its divisors is an integer number (3277777777).

Almost surely, 2^6555555553 is an apocalyptic number.

It is an amenable number.

6555555553 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555555553 is an equidigital number, since it uses as much as digits as its factorization.

6555555553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7031250, while the sum is 49.

The square root of 6555555553 is about 80966.3853274925. The cubic root of 6555555553 is about 1871.5574690906.

The spelling of 6555555553 in words is "six billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-three".