Base | Representation |
---|---|
bin | 1100001010110… |
… | …11110110010001 |
3 | 21010002121112001 |
4 | 12011123312101 |
5 | 202113304311 |
6 | 14044034001 |
7 | 2346506614 |
oct | 605336621 |
9 | 233077461 |
10 | 102088081 |
11 | 52698317 |
12 | 2a232901 |
13 | 181c5064 |
14 | d7b617b |
15 | 8e684c1 |
hex | 615bd91 |
102088081 has 2 divisors, whose sum is σ = 102088082. Its totient is φ = 102088080.
The previous prime is 102088079. The next prime is 102088087. The reversal of 102088081 is 180880201.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 97318225 + 4769856 = 9865^2 + 2184^2 .
It is an emirp because it is prime and its reverse (180880201) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 102088081 - 21 = 102088079 is a prime.
It is a super-2 number, since 2×1020880812 = 20843952564525122, which contains 22 as substring.
Together with 102088079, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (102088087) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51044040 + 51044041.
It is an arithmetic number, because the mean of its divisors is an integer number (51044041).
Almost surely, 2102088081 is an apocalyptic number.
It is an amenable number.
102088081 is a deficient number, since it is larger than the sum of its proper divisors (1).
102088081 is an equidigital number, since it uses as much as digits as its factorization.
102088081 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1024, while the sum is 28.
The square root of 102088081 is about 10103.8646566549. The cubic root of 102088081 is about 467.3673254441.
The spelling of 102088081 in words is "one hundred two million, eighty-eight thousand, eighty-one".
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