55505500553 has 2 divisors, whose sum is σ = 55505500554. Its totient is φ = 55505500552.

The previous prime is 55505500537. The next prime is 55505500571. The reversal of 55505500553 is 35500550555.

55505500553 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., 50412822784 + 5092677769 = 224528^2 + 71363^2 .

It is a cyclic number.

It is not a de Polignac number, because 55505500553 - 2⁴ = 55505500537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55505500573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752750276 + 27752750277.

It is an arithmetic number, because the mean of its divisors is an integer number (27752750277).

Almost surely, 2^55505500553 is an apocalyptic number.

It is an amenable number.

55505500553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505500553 is an equidigital number, since it uses as much as digits as its factorization.

55505500553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 234375, while the sum is 38.

The spelling of 55505500553 in words is "fifty-five billion, five hundred five million, five hundred thousand, five hundred fifty-three".