805155117 has 16 divisors (see below), whose sum is σ = 1156921920. Its totient is φ = 495136512.

The previous prime is 805155107. The next prime is 805155119. The reversal of 805155117 is 711551508.

It is not a de Polignac number, because 805155117 - 2⁷ = 805154989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805155119) 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, 57109 + ... + 69797.

It is an arithmetic number, because the mean of its divisors is an integer number (72307620).

Almost surely, 2^805155117 is an apocalyptic number.

It is an amenable number.

805155117 is a deficient number, since it is larger than the sum of its proper divisors (351766803).

805155117 is a wasteful number, since it uses less digits than its factorization.

805155117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14332.

The product of its (nonzero) digits is 7000, while the sum is 33.

The square root of 805155117 is about 28375.2553644897. The cubic root of 805155117 is about 930.3074934175.

The spelling of 805155117 in words is "eight hundred five million, one hundred fifty-five thousand, one hundred seventeen".