85189061 has 2 divisors, whose sum is σ = 85189062. Its totient is φ = 85189060.

The previous prime is 85189043. The next prime is 85189067. The reversal of 85189061 is 16098158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67338436 + 17850625 = 8206^2 + 4225^2 .

It is a cyclic number.

It is not a de Polignac number, because 85189061 - 2⁶ = 85188997 is a prime.

It is a super-2 number, since 2×85189061² = 14514352228123442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85189067) 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, 42594530 + 42594531.

It is an arithmetic number, because the mean of its divisors is an integer number (42594531).

Almost surely, 2^85189061 is an apocalyptic number.

It is an amenable number.

85189061 is a deficient number, since it is larger than the sum of its proper divisors (1).

85189061 is an equidigital number, since it uses as much as digits as its factorization.

85189061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 85189061 is about 9229.7920344935. The cubic root of 85189061 is about 440.0087136704.

The spelling of 85189061 in words is "eighty-five million, one hundred eighty-nine thousand, sixty-one".