85197115 has 16 divisors (see below), whose sum is σ = 108725760. Its totient is φ = 63866880.

The previous prime is 85197113. The next prime is 85197127. The reversal of 85197115 is 51179158.

It is not a de Polignac number, because 85197115 - 2¹ = 85197113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85197113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18406 + ... + 22564.

It is an arithmetic number, because the mean of its divisors is an integer number (6795360).

Almost surely, 2^85197115 is an apocalyptic number.

85197115 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85197115 is a deficient number, since it is larger than the sum of its proper divisors (23528645).

85197115 is a wasteful number, since it uses less digits than its factorization.

85197115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422.

The product of its digits is 12600, while the sum is 37.

The square root of 85197115 is about 9230.2283287035. The cubic root of 85197115 is about 440.0225797641.

The spelling of 85197115 in words is "eighty-five million, one hundred ninety-seven thousand, one hundred fifteen".