85201111 has 8 divisors (see below), whose sum is σ = 89942400. Its totient is φ = 80485560.

The previous prime is 85201097. The next prime is 85201169. The reversal of 85201111 is 11110258.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85201111 - 2¹¹ = 85199063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85204111) 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 in 7 ways as a sum of consecutive naturals, for example, 576 + ... + 13066.

It is an arithmetic number, because the mean of its divisors is an integer number (11242800).

Almost surely, 2^85201111 is an apocalyptic number.

85201111 is a deficient number, since it is larger than the sum of its proper divisors (4741289).

85201111 is a wasteful number, since it uses less digits than its factorization.

85201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12869.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 85201111 is about 9230.4447888496. Note that the first 3 decimals coincide. The cubic root of 85201111 is about 440.0294591157.

Adding to 85201111 its reverse (11110258), we get a palindrome (96311369).

The spelling of 85201111 in words is "eighty-five million, two hundred one thousand, one hundred eleven".