2055405 has 16 divisors (see below), whose sum is σ = 3587904. Its totient is φ = 996480.

The previous prime is 2055397. The next prime is 2055409. The reversal of 2055405 is 5045502.

It is not a de Polignac number, because 2055405 - 2³ = 2055397 is a prime.

2055405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055409) 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, 6064 + ... + 6393.

It is an arithmetic number, because the mean of its divisors is an integer number (224244).

2^2055405 is an apocalyptic number.

It is an amenable number.

2055405 is a deficient number, since it is larger than the sum of its proper divisors (1532499).

2055405 is a wasteful number, since it uses less digits than its factorization.

2055405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12476.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 2055405 is about 1433.6683716955. The cubic root of 2055405 is about 127.1449561097.

The spelling of 2055405 in words is "two million, fifty-five thousand, four hundred five".