Base | Representation |
---|---|
bin | 1001101000100… |
… | …00010011100101 |
3 | 12122001102120002 |
4 | 10310100103211 |
5 | 131141312031 |
6 | 12003551045 |
7 | 2000564222 |
oct | 464202345 |
9 | 178042502 |
10 | 80807141 |
11 | 41682668 |
12 | 2308b485 |
13 | 1398389c |
14 | aa36949 |
15 | 7162ccb |
hex | 4d104e5 |
80807141 has 2 divisors, whose sum is σ = 80807142. Its totient is φ = 80807140.
The previous prime is 80807117. The next prime is 80807143. The reversal of 80807141 is 14170808.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 57002500 + 23804641 = 7550^2 + 4879^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-80807141 is a prime.
Together with 80807143, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (80807143) by changing a digit.
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 as a sum of consecutive naturals, namely, 40403570 + 40403571.
It is an arithmetic number, because the mean of its divisors is an integer number (40403571).
Almost surely, 280807141 is an apocalyptic number.
It is an amenable number.
80807141 is a deficient number, since it is larger than the sum of its proper divisors (1).
80807141 is an equidigital number, since it uses as much as digits as its factorization.
80807141 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1792, while the sum is 29.
The square root of 80807141 is about 8989.2792258334. The cubic root of 80807141 is about 432.3312021304.
Adding to 80807141 its reverse (14170808), we get a palindrome (94977949).
The spelling of 80807141 in words is "eighty million, eight hundred seven thousand, one hundred forty-one".
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