55505505305 has 16 divisors (see below), whose sum is σ = 67887777024. Its totient is φ = 43550894400.

The previous prime is 55505505281. The next prime is 55505505311. The reversal of 55505505305 is 50350550555.

It is a de Polignac number, because none of the positive numbers 2^k-55505505305 is a prime.

It is a super-2 number, since 2×55505505305² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728780 + ... + 801330.

It is an arithmetic number, because the mean of its divisors is an integer number (4242986064).

Almost surely, 2^55505505305 is an apocalyptic number.

It is an amenable number.

55505505305 is a deficient number, since it is larger than the sum of its proper divisors (12382271719).

55505505305 is a wasteful number, since it uses less digits than its factorization.

55505505305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75496.

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

The spelling of 55505505305 in words is "fifty-five billion, five hundred five million, five hundred five thousand, three hundred five".