85243159 has 2 divisors, whose sum is σ = 85243160. Its totient is φ = 85243158.

The previous prime is 85243127. The next prime is 85243163. The reversal of 85243159 is 95134258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85243159 - 2⁵ = 85243127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85243859) 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, 42621579 + 42621580.

It is an arithmetic number, because the mean of its divisors is an integer number (42621580).

Almost surely, 2^85243159 is an apocalyptic number.

85243159 is a deficient number, since it is larger than the sum of its proper divisors (1).

85243159 is an equidigital number, since it uses as much as digits as its factorization.

85243159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The square root of 85243159 is about 9232.7221879574. The cubic root of 85243159 is about 440.1018342119.

The spelling of 85243159 in words is "eighty-five million, two hundred forty-three thousand, one hundred fifty-nine".