55055551105 has 4 divisors (see below), whose sum is σ = 66066661332. Its totient is φ = 44044440880.

The previous prime is 55055551073. The next prime is 55055551121. The reversal of 55055551105 is 50115555055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12054063681 + 43001487424 = 109791^2 + 207368^2 .

It is not a de Polignac number, because 55055551105 - 2⁵ = 55055551073 is a prime.

It is a super-2 number, since 2×55055551105² (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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5505555106 + ... + 5505555115.

It is an arithmetic number, because the mean of its divisors is an integer number (16516665333).

Almost surely, 2^55055551105 is an apocalyptic number.

It is an amenable number.

55055551105 is a deficient number, since it is larger than the sum of its proper divisors (11011110227).

55055551105 is a wasteful number, since it uses less digits than its factorization.

55055551105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011110226.

The product of its (nonzero) digits is 78125, while the sum is 37.

The spelling of 55055551105 in words is "fifty-five billion, fifty-five million, five hundred fifty-one thousand, one hundred five".