85241089 has 2 divisors, whose sum is σ = 85241090. Its totient is φ = 85241088.

The previous prime is 85241047. The next prime is 85241113. The reversal of 85241089 is 98014258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84492864 + 748225 = 9192^2 + 865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85241089 is a prime.

It is not a weakly prime, because it can be changed into another prime (85241389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42620544 + 42620545.

It is an arithmetic number, because the mean of its divisors is an integer number (42620545).

Almost surely, 2^85241089 is an apocalyptic number.

It is an amenable number.

85241089 is a deficient number, since it is larger than the sum of its proper divisors (1).

85241089 is an equidigital number, since it uses as much as digits as its factorization.

85241089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 85241089 is about 9232.6100859941. The cubic root of 85241089 is about 440.0982717826.

The spelling of 85241089 in words is "eighty-five million, two hundred forty-one thousand, eighty-nine".