55311110081 has 2 divisors, whose sum is σ = 55311110082. Its totient is φ = 55311110080.

The previous prime is 55311110077. The next prime is 55311110117. The reversal of 55311110081 is 18001111355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47099850625 + 8211259456 = 217025^2 + 90616^2 .

It is a cyclic number.

It is not a de Polignac number, because 55311110081 - 2² = 55311110077 is a prime.

It is a super-2 number, since 2×55311110081² (a number of 22 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 55311110081.

It is not a weakly prime, because it can be changed into another prime (55311110021) 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, 27655555040 + 27655555041.

It is an arithmetic number, because the mean of its divisors is an integer number (27655555041).

Almost surely, 2^55311110081 is an apocalyptic number.

It is an amenable number.

55311110081 is a deficient number, since it is larger than the sum of its proper divisors (1).

55311110081 is an equidigital number, since it uses as much as digits as its factorization.

55311110081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 26.

The spelling of 55311110081 in words is "fifty-five billion, three hundred eleven million, one hundred ten thousand, eighty-one".