8191055 has 4 divisors (see below), whose sum is σ = 9829272. Its totient is φ = 6552840.

The previous prime is 8191049. The next prime is 8191069. The reversal of 8191055 is 5501918.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5501918 = 2 ⋅2750959.

It is not a de Polignac number, because 8191055 - 2¹⁰ = 8190031 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, 819101 + ... + 819110.

It is an arithmetic number, because the mean of its divisors is an integer number (2457318).

Almost surely, 2^8191055 is an apocalyptic number.

8191055 is a deficient number, since it is larger than the sum of its proper divisors (1638217).

8191055 is a wasteful number, since it uses less digits than its factorization.

8191055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638216.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 8191055 is about 2862.0019217324. The cubic root of 8191055 is about 201.5796162177.

The spelling of 8191055 in words is "eight million, one hundred ninety-one thousand, fifty-five".