55504840555 has 4 divisors (see below), whose sum is σ = 66605808672. Its totient is φ = 44403872440.

The previous prime is 55504840553. The next prime is 55504840583.

55504840555 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 55504840555 - 2¹ = 55504840553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55504840553) 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, 5550484051 + ... + 5550484060.

It is an arithmetic number, because the mean of its divisors is an integer number (16651452168).

Almost surely, 2^55504840555 is an apocalyptic number.

55504840555 is a deficient number, since it is larger than the sum of its proper divisors (11100968117).

55504840555 is a wasteful number, since it uses less digits than its factorization.

55504840555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100968116.

The product of its (nonzero) digits is 2000000, while the sum is 46.

The spelling of 55504840555 in words is "fifty-five billion, five hundred four million, eight hundred forty thousand, five hundred fifty-five".