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55087032012 = 22329158296069
BaseRepresentation
bin110011010011011100…
…010110011011001100
312021012002222011122220
4303103130112123030
51400304240011022
641150122135340
73660052021605
oct632334263314
9167162864586
1055087032012
11213a9214541
12a814651550
13526b95163c
1429481a8dac
15167628d85c
hexcd37166cc

55087032012 has 24 divisors (see below), whose sum is σ = 132968698800. Its totient is φ = 17729159616.

The previous prime is 55087031977. The next prime is 55087032019. The reversal of 55087032012 is 21023078055.

It is a super-5 number, since 5×550870320125 (a number of 55 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (55087032019) 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, 79147687 + ... + 79148382.

It is an arithmetic number, because the mean of its divisors is an integer number (5540362450).

Almost surely, 255087032012 is an apocalyptic number.

It is an amenable number.

55087032012 is an abundant number, since it is smaller than the sum of its proper divisors (77881666788).

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

55087032012 is a wasteful number, since it uses less digits than its factorization.

55087032012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158296105 (or 158296103 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 55087032012 in words is "fifty-five billion, eighty-seven million, thirty-two thousand, twelve".

Divisors: 1 2 3 4 6 12 29 58 87 116 174 348 158296069 316592138 474888207 633184276 949776414 1899552828 4590586001 9181172002 13771758003 18362344004 27543516006 55087032012