Base | Representation |
---|---|
bin | 111111011110101010001 |
3 | 10220200100001 |
4 | 13323311101 |
5 | 1013030311 |
6 | 112330001 |
7 | 23452243 |
oct | 7736521 |
9 | 3820301 |
10 | 2080081 |
11 | 11a0883 |
12 | 843901 |
13 | 57aa23 |
14 | 3c2093 |
15 | 2b14c1 |
hex | 1fbd51 |
2080081 has 2 divisors, whose sum is σ = 2080082. Its totient is φ = 2080080.
The previous prime is 2080049. The next prime is 2080121. The reversal of 2080081 is 1800802.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 2076481 + 3600 = 1441^2 + 60^2 .
It is a cyclic number.
It is not a de Polignac number, because 2080081 - 25 = 2080049 is a prime.
It is a super-2 number, since 2×20800812 = 8653473933122, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (2080021) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040040 + 1040041.
It is an arithmetic number, because the mean of its divisors is an integer number (1040041).
22080081 is an apocalyptic number.
It is an amenable number.
2080081 is a deficient number, since it is larger than the sum of its proper divisors (1).
2080081 is an equidigital number, since it uses as much as digits as its factorization.
2080081 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 128, while the sum is 19.
The square root of 2080081 is about 1442.2485916096. The cubic root of 2080081 is about 127.6517429520.
Adding to 2080081 its reverse (1800802), we get a palindrome (3880883).
The spelling of 2080081 in words is "two million, eighty thousand, eighty-one".
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