85091211 has 6 divisors (see below), whose sum is σ = 122909540. Its totient is φ = 56727468.

The previous prime is 85091207. The next prime is 85091233. The reversal of 85091211 is 11219058.

It is not a de Polignac number, because 85091211 - 2² = 85091207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85091011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4727281 + ... + 4727298.

Almost surely, 2^85091211 is an apocalyptic number.

85091211 is a deficient number, since it is larger than the sum of its proper divisors (37818329).

85091211 is a wasteful number, since it uses less digits than its factorization.

85091211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9454585 (or 9454582 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 85091211 is about 9224.4897419857. The cubic root of 85091211 is about 439.8401812820.

The spelling of 85091211 in words is "eighty-five million, ninety-one thousand, two hundred eleven".