85051111 has 2 divisors, whose sum is σ = 85051112. Its totient is φ = 85051110.

The previous prime is 85051091. The next prime is 85051121. The reversal of 85051111 is 11115058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85051111 - 2¹⁹ = 84526823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85051121) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42525555 + 42525556.

It is an arithmetic number, because the mean of its divisors is an integer number (42525556).

Almost surely, 2^85051111 is an apocalyptic number.

85051111 is a deficient number, since it is larger than the sum of its proper divisors (1).

85051111 is an equidigital number, since it uses as much as digits as its factorization.

85051111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 22.

The square root of 85051111 is about 9222.3159238881. The cubic root of 85051111 is about 439.7710775426.

Adding to 85051111 its reverse (11115058), we get a palindrome (96166169).

The spelling of 85051111 in words is "eighty-five million, fifty-one thousand, one hundred eleven".