8171155 has 4 divisors (see below), whose sum is σ = 9805392. Its totient is φ = 6536920.

The previous prime is 8171153. The next prime is 8171173. The reversal of 8171155 is 5511718.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5511718 = 2 ⋅2755859.

It is not a de Polignac number, because 8171155 - 2¹ = 8171153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8171153) 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, 817111 + ... + 817120.

It is an arithmetic number, because the mean of its divisors is an integer number (2451348).

Almost surely, 2^8171155 is an apocalyptic number.

8171155 is a deficient number, since it is larger than the sum of its proper divisors (1634237).

8171155 is a wasteful number, since it uses less digits than its factorization.

8171155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634236.

The product of its digits is 1400, while the sum is 28.

The square root of 8171155 is about 2858.5232201261. The cubic root of 8171155 is about 201.4162393259.

The spelling of 8171155 in words is "eight million, one hundred seventy-one thousand, one hundred fifty-five".