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BaseRepresentation
bin11000111101001001
312012012211
4120331021
511232332
62105121
7604003
oct307511
9165184
10102217
116a885
124b1a1
13376ab
1429373
1520447
hex18f49

102217 has 2 divisors, whose sum is σ = 102218. Its totient is φ = 102216.

The previous prime is 102203. The next prime is 102229. The reversal of 102217 is 712201.

Adding to 102217 its reverse (712201), we get a palindrome (814418).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92416 + 9801 = 304^2 + 99^2 .

It is a cyclic number.

It is not a de Polignac number, because 102217 - 211 = 100169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102197 and 102206.

It is not a weakly prime, because it can be changed into another prime (102317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51108 + 51109.

It is an arithmetic number, because the mean of its divisors is an integer number (51109).

2102217 is an apocalyptic number.

It is an amenable number.

102217 is a deficient number, since it is larger than the sum of its proper divisors (1).

102217 is an equidigital number, since it uses as much as digits as its factorization.

102217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 102217 is about 319.7139346353. The cubic root of 102217 is about 46.7563976489.

The spelling of 102217 in words is "one hundred two thousand, two hundred seventeen", and thus it is an iban number.