5555056321 has 2 divisors, whose sum is σ = 5555056322. Its totient is φ = 5555056320.

The previous prime is 5555056319. The next prime is 5555056333. The reversal of 5555056321 is 1236505555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5538336400 + 16719921 = 74420^2 + 4089^2 .

It is a cyclic number.

It is not a de Polignac number, because 5555056321 - 2¹ = 5555056319 is a prime.

Together with 5555056319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5555056021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777528160 + 2777528161.

It is an arithmetic number, because the mean of its divisors is an integer number (2777528161).

Almost surely, 2^5555056321 is an apocalyptic number.

It is an amenable number.

5555056321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555056321 is an equidigital number, since it uses as much as digits as its factorization.

5555056321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112500, while the sum is 37.

The square root of 5555056321 is about 74532.2502075444. The cubic root of 5555056321 is about 1771.0445621273.

The spelling of 5555056321 in words is "five billion, five hundred fifty-five million, fifty-six thousand, three hundred twenty-one".