55211243089 has 2 divisors, whose sum is σ = 55211243090. Its totient is φ = 55211243088.

The previous prime is 55211243047. The next prime is 55211243093. The reversal of 55211243089 is 98034211255.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28752967489 + 26458275600 = 169567^2 + 162660^2 .

It is a cyclic number.

It is not a de Polignac number, because 55211243089 - 2²⁹ = 54674372177 is a prime.

It is not a weakly prime, because it can be changed into another prime (55211240089) 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, 27605621544 + 27605621545.

It is an arithmetic number, because the mean of its divisors is an integer number (27605621545).

Almost surely, 2^55211243089 is an apocalyptic number.

It is an amenable number.

55211243089 is a deficient number, since it is larger than the sum of its proper divisors (1).

55211243089 is an equidigital number, since it uses as much as digits as its factorization.

55211243089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 55211243089 in words is "fifty-five billion, two hundred eleven million, two hundred forty-three thousand, eighty-nine".