855113317 has 4 divisors (see below), whose sum is σ = 857406220. Its totient is φ = 852820416.

The previous prime is 855113309. The next prime is 855113321. The reversal of 855113317 is 713311558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 419389441 + 435723876 = 20479^2 + 20874^2 .

It is a cyclic number.

It is not a de Polignac number, because 855113317 - 2³ = 855113309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855113387) 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, 1145892 + ... + 1146637.

It is an arithmetic number, because the mean of its divisors is an integer number (214351555).

Almost surely, 2^855113317 is an apocalyptic number.

It is an amenable number.

855113317 is a deficient number, since it is larger than the sum of its proper divisors (2292903).

855113317 is a wasteful number, since it uses less digits than its factorization.

855113317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292902.

The product of its digits is 12600, while the sum is 34.

The square root of 855113317 is about 29242.3206500442. The cubic root of 855113317 is about 949.1639244213.

The spelling of 855113317 in words is "eight hundred fifty-five million, one hundred thirteen thousand, three hundred seventeen".