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BaseRepresentation
bin10101000010010001
311101012011
4111002101
510224121
61502521
7506125
oct250221
9141164
1086161
1159809
1241a41
13302aa
1423585
151a7e1
hex15091

86161 has 2 divisors, whose sum is σ = 86162. Its totient is φ = 86160.

The previous prime is 86143. The next prime is 86171. The reversal of 86161 is 16168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57600 + 28561 = 240^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 86161 - 213 = 77969 is a prime.

It is not a weakly prime, because it can be changed into another prime (86111) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43080 + 43081.

It is an arithmetic number, because the mean of its divisors is an integer number (43081).

286161 is an apocalyptic number.

It is an amenable number.

86161 is a deficient number, since it is larger than the sum of its proper divisors (1).

86161 is an equidigital number, since it uses as much as digits as its factorization.

86161 is an evil number, because the sum of its binary digits is even.

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

The square root of 86161 is about 293.5319403404. The cubic root of 86161 is about 44.1675772131.

The spelling of 86161 in words is "eighty-six thousand, one hundred sixty-one".