Base | Representation |
---|---|
bin | 1001111010000… |
… | …00001001010101 |
3 | 12210100221002212 |
4 | 10331000021111 |
5 | 132233201440 |
6 | 12125043205 |
7 | 2026224524 |
oct | 475001125 |
9 | 183327085 |
10 | 83100245 |
11 | 429a9498 |
12 | 239b6505 |
13 | 142a7557 |
14 | b0724bb |
15 | 7467465 |
hex | 4f40255 |
83100245 has 4 divisors (see below), whose sum is σ = 99720300. Its totient is φ = 66480192.
The previous prime is 83100223. The next prime is 83100271. The reversal of 83100245 is 54200138.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54200138 = 2 ⋅27100069.
It can be written as a sum of positive squares in 2 ways, for example, as 20484676 + 62615569 = 4526^2 + 7913^2 .
It is a cyclic number.
It is not a de Polignac number, because 83100245 - 212 = 83096149 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 83100245.
It is a congruent number.
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 3 ways as a sum of consecutive naturals, for example, 8310020 + ... + 8310029.
It is an arithmetic number, because the mean of its divisors is an integer number (24930075).
Almost surely, 283100245 is an apocalyptic number.
It is an amenable number.
83100245 is a deficient number, since it is larger than the sum of its proper divisors (16620055).
83100245 is a wasteful number, since it uses less digits than its factorization.
83100245 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16620054.
The product of its (nonzero) digits is 960, while the sum is 23.
The square root of 83100245 is about 9115.9335780818. The cubic root of 83100245 is about 436.3826092537.
The spelling of 83100245 in words is "eighty-three million, one hundred thousand, two hundred forty-five".
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