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85109159 is a prime number
BaseRepresentation
bin1010001001010…
…10100110100111
312221010222211002
411010222212213
5133241443114
612240103515
72052262442
oct504524647
9187128732
1085109159
1144050853
1224604b9b
131482ba65
14b436659
1577127de
hex512a9a7

85109159 has 2 divisors, whose sum is σ = 85109160. Its totient is φ = 85109158.

The previous prime is 85109119. The next prime is 85109173. The reversal of 85109159 is 95190158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85109159 - 212 = 85105063 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85109119) 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, 42554579 + 42554580.

It is an arithmetic number, because the mean of its divisors is an integer number (42554580).

Almost surely, 285109159 is an apocalyptic number.

85109159 is a deficient number, since it is larger than the sum of its proper divisors (1).

85109159 is an equidigital number, since it uses as much as digits as its factorization.

85109159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 85109159 is about 9225.4625358298. The cubic root of 85109159 is about 439.8711037730.

The spelling of 85109159 in words is "eighty-five million, one hundred nine thousand, one hundred fifty-nine".