855208115 has 16 divisors (see below), whose sum is σ = 1069411680. Its totient is φ = 655737600.

The previous prime is 855208111. The next prime is 855208117. The reversal of 855208115 is 511802558.

It is not a de Polignac number, because 855208115 - 2² = 855208111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (855208111) 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 15 ways as a sum of consecutive naturals, for example, 1661 + ... + 41390.

It is an arithmetic number, because the mean of its divisors is an integer number (66838230).

Almost surely, 2^855208115 is an apocalyptic number.

855208115 is a deficient number, since it is larger than the sum of its proper divisors (214203565).

855208115 is a wasteful number, since it uses less digits than its factorization.

855208115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43222.

The product of its (nonzero) digits is 16000, while the sum is 35.

The square root of 855208115 is about 29243.9415093109. The cubic root of 855208115 is about 949.1989979471.

The spelling of 855208115 in words is "eight hundred fifty-five million, two hundred eight thousand, one hundred fifteen".