85358081 has 2 divisors, whose sum is σ = 85358082. Its totient is φ = 85358080.

The previous prime is 85358041. The next prime is 85358087. The reversal of 85358081 is 18085358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84474481 + 883600 = 9191^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 85358081 - 2⁶ = 85358017 is a prime.

It is a super-2 number, since 2×85358081² = 14572003984005122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85358087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42679040 + 42679041.

It is an arithmetic number, because the mean of its divisors is an integer number (42679041).

Almost surely, 2^85358081 is an apocalyptic number.

It is an amenable number.

85358081 is a deficient number, since it is larger than the sum of its proper divisors (1).

85358081 is an equidigital number, since it uses as much as digits as its factorization.

85358081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 85358081 is about 9238.9437166810. The cubic root of 85358081 is about 440.2995222988.

The spelling of 85358081 in words is "eighty-five million, three hundred fifty-eight thousand, eighty-one".