5505554981 has 2 divisors, whose sum is σ = 5505554982. Its totient is φ = 5505554980.

The previous prime is 5505554959. The next prime is 5505554983. The reversal of 5505554981 is 1894555055.

5505554981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4560976225 + 944578756 = 67535^2 + 30734^2 .

It is a cyclic number.

It is not a de Polignac number, because 5505554981 - 2¹⁰ = 5505553957 is a prime.

It is a super-2 number, since 2×5505554981² = 60622271297627820722, which contains 22 as substring.

Together with 5505554983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5505554983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752777490 + 2752777491.

It is an arithmetic number, because the mean of its divisors is an integer number (2752777491).

Almost surely, 2^5505554981 is an apocalyptic number.

It is an amenable number.

5505554981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5505554981 is an equidigital number, since it uses as much as digits as its factorization.

5505554981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900000, while the sum is 47.

The square root of 5505554981 is about 74199.4270934756. The cubic root of 5505554981 is about 1765.7682409744.

The spelling of 5505554981 in words is "five billion, five hundred five million, five hundred fifty-four thousand, nine hundred eighty-one".