55505105569 has 2 divisors, whose sum is σ = 55505105570. Its totient is φ = 55505105568.

The previous prime is 55505105549. The next prime is 55505105599. The reversal of 55505105569 is 96550150555.

55505105569 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., 46059598225 + 9445507344 = 214615^2 + 97188^2 .

It is a cyclic number.

It is not a de Polignac number, because 55505105569 - 2¹⁵ = 55505072801 is a prime.

It is a super-2 number, since 2×55505105569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55505105549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752552784 + 27752552785.

It is an arithmetic number, because the mean of its divisors is an integer number (27752552785).

Almost surely, 2^55505105569 is an apocalyptic number.

It is an amenable number.

55505105569 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505105569 is an equidigital number, since it uses as much as digits as its factorization.

55505105569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 843750, while the sum is 46.

The spelling of 55505105569 in words is "fifty-five billion, five hundred five million, one hundred five thousand, five hundred sixty-nine".