55561106005 has 4 divisors (see below), whose sum is σ = 66673327212. Its totient is φ = 44448884800.

The previous prime is 55561105973. The next prime is 55561106009. The reversal of 55561106005 is 50060116555.

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 41631913521 + 13929192484 = 204039^2 + 118022^2 .

It is not a de Polignac number, because 55561106005 - 2⁵ = 55561105973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55561106009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556110596 + ... + 5556110605.

It is an arithmetic number, because the mean of its divisors is an integer number (16668331803).

Almost surely, 2^55561106005 is an apocalyptic number.

It is an amenable number.

55561106005 is a deficient number, since it is larger than the sum of its proper divisors (11112221207).

55561106005 is a wasteful number, since it uses less digits than its factorization.

55561106005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112221206.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 55561106005 in words is "fifty-five billion, five hundred sixty-one million, one hundred six thousand, five".