55205550187 has 8 divisors (see below), whose sum is σ = 58238272400. Its totient is φ = 52185544704.

The previous prime is 55205550167. The next prime is 55205550221. The reversal of 55205550187 is 78105550255.

55205550187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-55205550187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55205550137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3170262 + ... + 3187627.

It is an arithmetic number, because the mean of its divisors is an integer number (7279784050).

Almost surely, 2^55205550187 is an apocalyptic number.

55205550187 is a deficient number, since it is larger than the sum of its proper divisors (3032722213).

55205550187 is a wasteful number, since it uses less digits than its factorization.

55205550187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358365.

The product of its (nonzero) digits is 350000, while the sum is 43.

The spelling of 55205550187 in words is "fifty-five billion, two hundred five million, five hundred fifty thousand, one hundred eighty-seven".