555050005561 has 2 divisors, whose sum is σ = 555050005562. Its totient is φ = 555050005560.

The previous prime is 555050005519. The next prime is 555050005571. The reversal of 555050005561 is 165500050555.

555050005561 is digitally balanced in base 2, 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., 382596679936 + 172453325625 = 618544^2 + 415275^2 .

It is a cyclic number.

It is not a de Polignac number, because 555050005561 - 2¹⁵ = 555049972793 is a prime.

It is a super-2 number, since 2×555050005561² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 555050005561.

It is not a weakly prime, because it can be changed into another prime (555050005571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277525002780 + 277525002781.

It is an arithmetic number, because the mean of its divisors is an integer number (277525002781).

Almost surely, 2^555050005561 is an apocalyptic number.

It is an amenable number.

555050005561 is a deficient number, since it is larger than the sum of its proper divisors (1).

555050005561 is an equidigital number, since it uses as much as digits as its factorization.

555050005561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 555050005561 in words is "five hundred fifty-five billion, fifty million, five thousand, five hundred sixty-one".