85207111 has 24 divisors (see below), whose sum is σ = 103535712. Its totient is φ = 69696000.

The previous prime is 85207097. The next prime is 85207117. The reversal of 85207111 is 11170258.

It is not a de Polignac number, because 85207111 - 2⁹ = 85206599 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85207117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46411 + ... + 48211.

It is an arithmetic number, because the mean of its divisors is an integer number (4313988).

Almost surely, 2^85207111 is an apocalyptic number.

85207111 is a deficient number, since it is larger than the sum of its proper divisors (18328601).

85207111 is a wasteful number, since it uses less digits than its factorization.

85207111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 85207111 is about 9230.7697945513. The cubic root of 85207111 is about 440.0397880686.

Adding to 85207111 its reverse (11170258), we get a palindrome (96377369).

The spelling of 85207111 in words is "eighty-five million, two hundred seven thousand, one hundred eleven".