85258891 has 2 divisors, whose sum is σ = 85258892. Its totient is φ = 85258890.

The previous prime is 85258883. The next prime is 85258939. The reversal of 85258891 is 19885258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85258891 - 2³ = 85258883 is a prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (85258801) 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, 42629445 + 42629446.

It is an arithmetic number, because the mean of its divisors is an integer number (42629446).

Almost surely, 2^85258891 is an apocalyptic number.

85258891 is a deficient number, since it is larger than the sum of its proper divisors (1).

85258891 is an equidigital number, since it uses as much as digits as its factorization.

85258891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 46.

The square root of 85258891 is about 9233.5741184007. The cubic root of 85258891 is about 440.1289067897.

The spelling of 85258891 in words is "eighty-five million, two hundred fifty-eight thousand, eight hundred ninety-one".