55111110101 has 2 divisors, whose sum is σ = 55111110102. Its totient is φ = 55111110100.

The previous prime is 55111110091. The next prime is 55111110113. The reversal of 55111110101 is 10101111155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39766342225 + 15344767876 = 199415^2 + 123874^2 .

It is a cyclic number.

It is not a de Polignac number, because 55111110101 - 2³⁰ = 54037368277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55111110101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55111110191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27555555050 + 27555555051.

It is an arithmetic number, because the mean of its divisors is an integer number (27555555051).

Almost surely, 2^55111110101 is an apocalyptic number.

It is an amenable number.

55111110101 is a deficient number, since it is larger than the sum of its proper divisors (1).

55111110101 is an equidigital number, since it uses as much as digits as its factorization.

55111110101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25, while the sum is 17.

Adding to 55111110101 its reverse (10101111155), we get a palindrome (65212221256).

The spelling of 55111110101 in words is "fifty-five billion, one hundred eleven million, one hundred ten thousand, one hundred one".