85187247 has 4 divisors (see below), whose sum is σ = 113583000. Its totient is φ = 56791496.

The previous prime is 85187227. The next prime is 85187251. The reversal of 85187247 is 74278158.

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 85187247 - 2⁶ = 85187183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85187199 and 85187208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85187227) 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, 14197872 + ... + 14197877.

It is an arithmetic number, because the mean of its divisors is an integer number (28395750).

Almost surely, 2^85187247 is an apocalyptic number.

85187247 is a deficient number, since it is larger than the sum of its proper divisors (28395753).

85187247 is a wasteful number, since it uses less digits than its factorization.

85187247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28395752.

The product of its digits is 125440, while the sum is 42.

The square root of 85187247 is about 9229.6937652340. The cubic root of 85187247 is about 440.0055904937.

The spelling of 85187247 in words is "eighty-five million, one hundred eighty-seven thousand, two hundred forty-seven".