55087447197 has 8 divisors (see below), whose sum is σ = 73855731040. Its totient is φ = 36522064080.

The previous prime is 55087447183. The next prime is 55087447249. The reversal of 55087447197 is 79174478055.

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

It is not a de Polignac number, because 55087447197 - 2¹² = 55087443101 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 (55087447697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50724547 + ... + 50725632.

It is an arithmetic number, because the mean of its divisors is an integer number (9231966380).

Almost surely, 2^55087447197 is an apocalyptic number.

It is an amenable number.

55087447197 is a deficient number, since it is larger than the sum of its proper divisors (18768283843).

55087447197 is a wasteful number, since it uses less digits than its factorization.

55087447197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101450363.

The product of its (nonzero) digits is 9878400, while the sum is 57.

The spelling of 55087447197 in words is "fifty-five billion, eighty-seven million, four hundred forty-seven thousand, one hundred ninety-seven".