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BaseRepresentation
bin10111111110101101
311222201211
4113332231
511120341
62034421
7556234
oct277655
9158654
1098221
1167882
1248a11
1335926
1427b1b
151e181

98221 has 2 divisors, whose sum is σ = 98222. Its totient is φ = 98220.

The previous prime is 98213. The next prime is 98227. The reversal of 98221 is 12289.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62500 + 35721 = 250^2 + 189^2 .

It is an emirp because it is prime and its reverse (12289) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98221 - 23 = 98213 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 98192 and 98201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98227) 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 as a sum of consecutive naturals, namely, 49110 + 49111.

It is an arithmetic number, because the mean of its divisors is an integer number (49111).

298221 is an apocalyptic number.

It is an amenable number.

98221 is a deficient number, since it is larger than the sum of its proper divisors (1).

98221 is an equidigital number, since it uses as much as digits as its factorization.

98221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 22.

The square root of 98221 is about 313.4022973751. The cubic root of 98221 is about 46.1389935827.

The spelling of 98221 in words is "ninety-eight thousand, two hundred twenty-one".