55104443081 has 2 divisors, whose sum is σ = 55104443082. Its totient is φ = 55104443080.

The previous prime is 55104443047. The next prime is 55104443117. The reversal of 55104443081 is 18034440155.

55104443081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54075316681 + 1029126400 = 232541^2 + 32080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55104443081 is a prime.

It is a super-2 number, since 2×55104443081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55104443021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27552221540 + 27552221541.

It is an arithmetic number, because the mean of its divisors is an integer number (27552221541).

Almost surely, 2^55104443081 is an apocalyptic number.

It is an amenable number.

55104443081 is a deficient number, since it is larger than the sum of its proper divisors (1).

55104443081 is an equidigital number, since it uses as much as digits as its factorization.

55104443081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 55104443081 in words is "fifty-five billion, one hundred four million, four hundred forty-three thousand, eighty-one".