5505555004981 has 2 divisors, whose sum is σ = 5505555004982. Its totient is φ = 5505555004980.

The previous prime is 5505555004979. The next prime is 5505555004991. The reversal of 5505555004981 is 1894005555055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5094364984900 + 411190020081 = 2257070^2 + 641241^2 .

It is a cyclic number.

It is not a de Polignac number, because 5505555004981 - 2¹ = 5505555004979 is a prime.

It is a super-2 number, since 2×5505555004981² (a number of 26 digits) contains 22 as substring.

Together with 5505555004979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5505555004991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752777502490 + 2752777502491.

It is an arithmetic number, because the mean of its divisors is an integer number (2752777502491).

Almost surely, 2^{5505555004981} is an apocalyptic number.

It is an amenable number.

5505555004981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5505555004981 is an equidigital number, since it uses as much as digits as its factorization.

5505555004981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500000, while the sum is 52.

The spelling of 5505555004981 in words is "five trillion, five hundred five billion, five hundred fifty-five million, four thousand, nine hundred eighty-one".