2055518 has 4 divisors (see below), whose sum is σ = 3083280. Its totient is φ = 1027758.

The previous prime is 2055511. The next prime is 2055541. The reversal of 2055518 is 8155502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8155502 = 2 ⋅4077751.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513878 + ... + 513881.

It is an arithmetic number, because the mean of its divisors is an integer number (770820).

2^2055518 is an apocalyptic number.

2055518 is a deficient number, since it is larger than the sum of its proper divisors (1027762).

2055518 is a wasteful number, since it uses less digits than its factorization.

2055518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027761.

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

The square root of 2055518 is about 1433.7077805466. The cubic root of 2055518 is about 127.1472860830.

The spelling of 2055518 in words is "two million, fifty-five thousand, five hundred eighteen".