8120055 has 16 divisors (see below), whose sum is σ = 13027680. Its totient is φ = 4318848.

The previous prime is 8120051. The next prime is 8120069. The reversal of 8120055 is 5500218.

It is not a de Polignac number, because 8120055 - 2² = 8120051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120051) 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, 9381 + ... + 10209.

It is an arithmetic number, because the mean of its divisors is an integer number (814230).

Almost surely, 2^8120055 is an apocalyptic number.

8120055 is a deficient number, since it is larger than the sum of its proper divisors (4907625).

8120055 is a wasteful number, since it uses less digits than its factorization.

8120055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 8120055 is about 2849.5710203467. The cubic root of 8120055 is about 200.9954950600.

The spelling of 8120055 in words is "eight million, one hundred twenty thousand, fifty-five".