Base | Representation |
---|---|
bin | 11110010010110… |
… | …11110000010001 |
3 | 122201012012111022 |
4 | 33021123300101 |
5 | 1010024144332 |
6 | 41114525225 |
7 | 6204036224 |
oct | 1711336021 |
9 | 581165438 |
10 | 254131217 |
11 | 1204a55aa |
12 | 71136815 |
13 | 4085ac02 |
14 | 25a735bb |
15 | 1749d212 |
hex | f25bc11 |
254131217 has 2 divisors, whose sum is σ = 254131218. Its totient is φ = 254131216.
The previous prime is 254131187. The next prime is 254131253. The reversal of 254131217 is 712131452.
254131217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 202521361 + 51609856 = 14231^2 + 7184^2 .
It is a cyclic number.
It is not a de Polignac number, because 254131217 - 210 = 254130193 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (254131417) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127065608 + 127065609.
It is an arithmetic number, because the mean of its divisors is an integer number (127065609).
Almost surely, 2254131217 is an apocalyptic number.
It is an amenable number.
254131217 is a deficient number, since it is larger than the sum of its proper divisors (1).
254131217 is an equidigital number, since it uses as much as digits as its factorization.
254131217 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1680, while the sum is 26.
The square root of 254131217 is about 15941.4935623987. The cubic root of 254131217 is about 633.4115895606.
Adding to 254131217 its reverse (712131452), we get a palindrome (966262669).
It can be divided in two parts, 2541 and 31217, that multiplied together give a palindrome (79322397).
The spelling of 254131217 in words is "two hundred fifty-four million, one hundred thirty-one thousand, two hundred seventeen".
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