Base | Representation |
---|---|
bin | 11001101000011… |
… | …00001111001001 |
3 | 112222120112210201 |
4 | 30310030033021 |
5 | 420020230301 |
6 | 33200212201 |
7 | 5220353032 |
oct | 1464141711 |
9 | 488515721 |
10 | 215008201 |
11 | 100403931 |
12 | 6000a061 |
13 | 357105b5 |
14 | 207aba89 |
15 | 13d21201 |
hex | cd0c3c9 |
215008201 has 4 divisors (see below), whose sum is σ = 215469072. Its totient is φ = 214547332.
The previous prime is 215008193. The next prime is 215008207. The reversal of 215008201 is 102800512.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 215008201 - 23 = 215008193 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (215008207) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229735 + ... + 230668.
It is an arithmetic number, because the mean of its divisors is an integer number (53867268).
Almost surely, 2215008201 is an apocalyptic number.
It is an amenable number.
215008201 is a deficient number, since it is larger than the sum of its proper divisors (460871).
215008201 is an equidigital number, since it uses as much as digits as its factorization.
215008201 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 460870.
The product of its (nonzero) digits is 160, while the sum is 19.
The square root of 215008201 is about 14663.1579477274. The cubic root of 215008201 is about 599.0802584388.
Adding to 215008201 its reverse (102800512), we get a palindrome (317808713).
The spelling of 215008201 in words is "two hundred fifteen million, eight thousand, two hundred one".
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