Base | Representation |
---|---|
bin | 1010011000111… |
… | …10000110011111 |
3 | 20001222221022210 |
4 | 11030132012133 |
5 | 134302430403 |
6 | 12352011503 |
7 | 2105543340 |
oct | 514360637 |
9 | 201887283 |
10 | 87155103 |
11 | 45218a12 |
12 | 25230b93 |
13 | 15097089 |
14 | b80a0c7 |
15 | 79b8b03 |
hex | 531e19f |
87155103 has 8 divisors (see below), whose sum is σ = 132807808. Its totient is φ = 49802904.
The previous prime is 87155093. The next prime is 87155111. The reversal of 87155103 is 30155178.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 87155103 - 24 = 87155087 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87155113) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2075101 + ... + 2075142.
It is an arithmetic number, because the mean of its divisors is an integer number (16600976).
Almost surely, 287155103 is an apocalyptic number.
87155103 is a deficient number, since it is larger than the sum of its proper divisors (45652705).
87155103 is a wasteful number, since it uses less digits than its factorization.
87155103 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4150253.
The product of its (nonzero) digits is 4200, while the sum is 30.
The square root of 87155103 is about 9335.6897442021. The cubic root of 87155103 is about 443.3679272130.
The spelling of 87155103 in words is "eighty-seven million, one hundred fifty-five thousand, one hundred three".
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