55550187217 has 8 divisors (see below), whose sum is σ = 64962345536. Its totient is φ = 46507133232.

The previous prime is 55550187181. The next prime is 55550187229. The reversal of 55550187217 is 71278105555.

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

It is not a de Polignac number, because 55550187217 - 2¹¹ = 55550185169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55550187257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92275758 + ... + 92276359.

It is an arithmetic number, because the mean of its divisors is an integer number (8120293192).

Almost surely, 2^55550187217 is an apocalyptic number.

It is an amenable number.

55550187217 is a deficient number, since it is larger than the sum of its proper divisors (9412158319).

55550187217 is a wasteful number, since it uses less digits than its factorization.

55550187217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184552167.

The product of its (nonzero) digits is 490000, while the sum is 46.

The spelling of 55550187217 in words is "fifty-five billion, five hundred fifty million, one hundred eighty-seven thousand, two hundred seventeen".