Base | Representation |
---|---|
bin | 1010011000100… |
… | …11001000001011 |
3 | 20001220122200001 |
4 | 11030103020023 |
5 | 134300011110 |
6 | 12351023431 |
7 | 2105265316 |
oct | 514231013 |
9 | 201818601 |
10 | 87110155 |
11 | 45198170 |
12 | 2520ab77 |
13 | 1507c792 |
14 | b7d797d |
15 | 79aa63a |
hex | 531320b |
87110155 has 32 divisors (see below), whose sum is σ = 123955200. Its totient is φ = 58060800.
The previous prime is 87110083. The next prime is 87110161. The reversal of 87110155 is 55101178.
It is not a de Polignac number, because 87110155 - 215 = 87077387 is a prime.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31051 + ... + 33739.
It is an arithmetic number, because the mean of its divisors is an integer number (3873600).
Almost surely, 287110155 is an apocalyptic number.
87110155 is a deficient number, since it is larger than the sum of its proper divisors (36845045).
87110155 is a wasteful number, since it uses less digits than its factorization.
87110155 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2755.
The product of its (nonzero) digits is 1400, while the sum is 28.
The square root of 87110155 is about 9333.2821129547. The cubic root of 87110155 is about 443.2916955763.
It can be divided in two parts, 871 and 10155, that added together give a triangular number (11026 = T148).
The spelling of 87110155 in words is "eighty-seven million, one hundred ten thousand, one hundred fifty-five".
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