85915243 has 4 divisors (see below), whose sum is σ = 85941688. Its totient is φ = 85888800.

The previous prime is 85915241. The next prime is 85915259. The reversal of 85915243 is 34251958.

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 85915243 - 2¹ = 85915241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85915241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7533 + ... + 15118.

It is an arithmetic number, because the mean of its divisors is an integer number (21485422).

Almost surely, 2^85915243 is an apocalyptic number.

85915243 is a deficient number, since it is larger than the sum of its proper divisors (26445).

85915243 is a wasteful number, since it uses less digits than its factorization.

85915243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26444.

The product of its digits is 43200, while the sum is 37.

The square root of 85915243 is about 9269.0475778259. The cubic root of 85915243 is about 441.2554416747.

The spelling of 85915243 in words is "eighty-five million, nine hundred fifteen thousand, two hundred forty-three".