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10205087 is a prime number
BaseRepresentation
bin100110111011…
…011110011111
3201012110202012
4212323132133
510103030322
61002421435
7152512304
oct46733637
921173665
1010205087
115840262
12350187b
132164019
1414d90ab
15d68ae2
hex9bb79f

10205087 has 2 divisors, whose sum is σ = 10205088. Its totient is φ = 10205086.

The previous prime is 10205051. The next prime is 10205089. The reversal of 10205087 is 78050201.

10205087 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10205087 - 212 = 10200991 is a prime.

Together with 10205089, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p677300 and since 10205087 and 677300 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10205089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5102543 + 5102544.

It is an arithmetic number, because the mean of its divisors is an integer number (5102544).

Almost surely, 210205087 is an apocalyptic number.

10205087 is a deficient number, since it is larger than the sum of its proper divisors (1).

10205087 is an equidigital number, since it uses as much as digits as its factorization.

10205087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 10205087 is about 3194.5401860049. The cubic root of 10205087 is about 216.9063354468.

Adding to 10205087 its reverse (78050201), we get a palindrome (88255288).

The spelling of 10205087 in words is "ten million, two hundred five thousand, eighty-seven".