73117855 has 4 divisors (see below), whose sum is σ = 87741432. Its totient is φ = 58494280.

The previous prime is 73117843. The next prime is 73117907. The reversal of 73117855 is 55871137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55871137 = 7 ⋅7981591.

It is not a de Polignac number, because 73117855 - 2⁵ = 73117823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7311781 + ... + 7311790.

It is an arithmetic number, because the mean of its divisors is an integer number (21935358).

Almost surely, 2^73117855 is an apocalyptic number.

73117855 is a deficient number, since it is larger than the sum of its proper divisors (14623577).

73117855 is a wasteful number, since it uses less digits than its factorization.

73117855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14623576.

The product of its digits is 29400, while the sum is 37.

The square root of 73117855 is about 8550.8979060681. The cubic root of 73117855 is about 418.1587101354.

The spelling of 73117855 in words is "seventy-three million, one hundred seventeen thousand, eight hundred fifty-five".