55110060511021 has 2 divisors, whose sum is σ = 55110060511022. Its totient is φ = 55110060511020.

The previous prime is 55110060510983. The next prime is 55110060511151. The reversal of 55110060511021 is 12011506001155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54231367998025 + 878692512996 = 7364195^2 + 937386^2 .

It is a cyclic number.

It is not a de Polignac number, because 55110060511021 - 2²⁷ = 55109926293293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55110060511621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27555030255510 + 27555030255511.

It is an arithmetic number, because the mean of its divisors is an integer number (27555030255511).

Almost surely, 2^{55110060511021} is an apocalyptic number.

It is an amenable number.

55110060511021 is a deficient number, since it is larger than the sum of its proper divisors (1).

55110060511021 is an equidigital number, since it uses as much as digits as its factorization.

55110060511021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 28.

Adding to 55110060511021 its reverse (12011506001155), we get a palindrome (67121566512176).

The spelling of 55110060511021 in words is "fifty-five trillion, one hundred ten billion, sixty million, five hundred eleven thousand, twenty-one".