6555555547 has 2 divisors, whose sum is σ = 6555555548. Its totient is φ = 6555555546.

The previous prime is 6555555509. The next prime is 6555555553. The reversal of 6555555547 is 7455555556.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6555555547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6555555494 and 6555555503.

It is not a weakly prime, because it can be changed into another prime (6555555557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277777773 + 3277777774.

It is an arithmetic number, because the mean of its divisors is an integer number (3277777774).

Almost surely, 2^6555555547 is an apocalyptic number.

6555555547 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555555547 is an equidigital number, since it uses as much as digits as its factorization.

6555555547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13125000, while the sum is 52.

The square root of 6555555547 is about 80966.3852904401. The cubic root of 6555555547 is about 1871.5574685196.

Subtracting 6555555547 from its reverse (7455555556), we obtain a palindrome (900000009).

The spelling of 6555555547 in words is "six billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred forty-seven".