2158055 has 4 divisors (see below), whose sum is σ = 2589672. Its totient is φ = 1726440.

The previous prime is 2158033. The next prime is 2158061. The reversal of 2158055 is 5508512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2158055 - 2¹⁰ = 2157031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215801 + ... + 215810.

It is an arithmetic number, because the mean of its divisors is an integer number (647418).

2^2158055 is an apocalyptic number.

2158055 is a deficient number, since it is larger than the sum of its proper divisors (431617).

2158055 is an equidigital number, since it uses as much as digits as its factorization.

2158055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431616.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 2158055 is about 1469.0319942057. The cubic root of 2158055 is about 129.2272699773.

The spelling of 2158055 in words is "two million, one hundred fifty-eight thousand, fifty-five".