85488191 has 4 divisors (see below), whose sum is σ = 86570400. Its totient is φ = 84405984.

The previous prime is 85488187. The next prime is 85488199. The reversal of 85488191 is 19188458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85488191 - 2² = 85488187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85488199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540986 + ... + 541143.

It is an arithmetic number, because the mean of its divisors is an integer number (21642600).

Almost surely, 2^85488191 is an apocalyptic number.

85488191 is a deficient number, since it is larger than the sum of its proper divisors (1082209).

85488191 is a wasteful number, since it uses less digits than its factorization.

85488191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082208.

The product of its digits is 92160, while the sum is 44.

The square root of 85488191 is about 9245.9824248157. The cubic root of 85488191 is about 440.5231226398.

The spelling of 85488191 in words is "eighty-five million, four hundred eighty-eight thousand, one hundred ninety-one".