55585172160 has 224 divisors, whose sum is σ = 224105541120. Its totient is φ = 12705168384.

The previous prime is 55585172147. The next prime is 55585172161. The reversal of 55585172160 is 6127158555.

55585172160 is a `hidden beast` number, since 5 + 5 + 58 + 517 + 21 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×55585172160² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (55585172161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399054 + ... + 520013.

Almost surely, 2^55585172160 is an apocalyptic number.

It is an amenable number.

55585172160 is an abundant number, since it is smaller than the sum of its proper divisors (168520368960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55585172160 is a wasteful number, since it uses less digits than its factorization.

55585172160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919100 (or 919084 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 45.

The spelling of 55585172160 in words is "fifty-five billion, five hundred eighty-five million, one hundred seventy-two thousand, one hundred sixty".