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55105555060 = 225891491731201
BaseRepresentation
bin110011010100100011…
…000000101001110100
312021020101211020111201
4303110203000221310
51400324010230220
641152023142244
73660365326633
oct632443005164
9167211736451
1055105555060
1121408716146
12a81a8a4984
13527273871a
14294a82b51a
151677bebd0a
hexcd48c0a74

55105555060 has 96 divisors (see below), whose sum is σ = 118586916000. Its totient is φ = 21505228800.

The previous prime is 55105555051. The next prime is 55105555061. The reversal of 55105555060 is 6055550155.

It can be written as a sum of positive squares in 16 ways, for example, as 37998484624 + 17107070436 = 194932^2 + 130794^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55105555061) 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, 45882460 + ... + 45883660.

It is an arithmetic number, because the mean of its divisors is an integer number (1235280375).

Almost surely, 255105555060 is an apocalyptic number.

It is an amenable number.

55105555060 is an abundant number, since it is smaller than the sum of its proper divisors (63481360940).

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

55105555060 is a wasteful number, since it uses less digits than its factorization.

55105555060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 55105555060 in words is "fifty-five billion, one hundred five million, five hundred fifty-five thousand, sixty".

Divisors: 1 2 4 5 10 20 89 149 173 178 298 346 356 445 596 692 745 865 890 1201 1490 1730 1780 2402 2980 3460 4804 6005 12010 13261 15397 24020 25777 26522 30794 51554 53044 61588 66305 76985 103108 106889 128885 132610 153970 178949 207773 213778 257770 265220 307940 357898 415546 427556 515540 534445 715796 831092 894745 1038865 1068890 1789490 2077730 2137780 2294153 3578980 4155460 4588306 9176612 11470765 15926461 18491797 22941530 30958177 31852922 36983594 45883060 61916354 63705844 73967188 79632305 92458985 123832708 154790885 159264610 184917970 309581770 318529220 369835940 619163540 2755277753 5510555506 11021111012 13776388765 27552777530 55105555060