55055004989 has 2 divisors, whose sum is σ = 55055004990. Its totient is φ = 55055004988.

The previous prime is 55055004973. The next prime is 55055004997. The reversal of 55055004989 is 98940055055.

55055004989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33933324100 + 21121680889 = 184210^2 + 145333^2 .

It is a cyclic number.

It is not a de Polignac number, because 55055004989 - 2⁴ = 55055004973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55055004919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527502494 + 27527502495.

It is an arithmetic number, because the mean of its divisors is an integer number (27527502495).

Almost surely, 2^55055004989 is an apocalyptic number.

It is an amenable number.

55055004989 is a deficient number, since it is larger than the sum of its proper divisors (1).

55055004989 is an equidigital number, since it uses as much as digits as its factorization.

55055004989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620000, while the sum is 50.

The spelling of 55055004989 in words is "fifty-five billion, fifty-five million, four thousand, nine hundred eighty-nine".