85117315 has 4 divisors (see below), whose sum is σ = 102140784. Its totient is φ = 68093848.

The previous prime is 85117303. The next prime is 85117433. The reversal of 85117315 is 51371158.

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 85117315 - 2⁷ = 85117187 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8511727 + ... + 8511736.

It is an arithmetic number, because the mean of its divisors is an integer number (25535196).

Almost surely, 2^85117315 is an apocalyptic number.

85117315 is a deficient number, since it is larger than the sum of its proper divisors (17023469).

85117315 is a wasteful number, since it uses less digits than its factorization.

85117315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17023468.

The product of its digits is 4200, while the sum is 31.

The square root of 85117315 is about 9225.9045626974. The cubic root of 85117315 is about 439.8851542550.

The spelling of 85117315 in words is "eighty-five million, one hundred seventeen thousand, three hundred fifteen".