54550959191 has 4 divisors (see below), whose sum is σ = 56310667584. Its totient is φ = 52791250800.

The previous prime is 54550959157. The next prime is 54550959217. The reversal of 54550959191 is 19195905545.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54550959191 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 (54550959101) 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, 879854150 + ... + 879854211.

It is an arithmetic number, because the mean of its divisors is an integer number (14077666896).

Almost surely, 2^54550959191 is an apocalyptic number.

54550959191 is a deficient number, since it is larger than the sum of its proper divisors (1759708393).

54550959191 is a wasteful number, since it uses less digits than its factorization.

54550959191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759708392.

The product of its (nonzero) digits is 1822500, while the sum is 53.

The spelling of 54550959191 in words is "fifty-four billion, five hundred fifty million, nine hundred fifty-nine thousand, one hundred ninety-one".