4005055 has 4 divisors (see below), whose sum is σ = 4806072. Its totient is φ = 3204040.

The previous prime is 4005049. The next prime is 4005091. The reversal of 4005055 is 5505004.

It is a happy number.

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

It is not a de Polignac number, because 4005055 - 2¹⁷ = 3873983 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, 400501 + ... + 400510.

It is an arithmetic number, because the mean of its divisors is an integer number (1201518).

Almost surely, 2^4005055 is an apocalyptic number.

4005055 is a deficient number, since it is larger than the sum of its proper divisors (801017).

4005055 is an equidigital number, since it uses as much as digits as its factorization.

4005055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801016.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 4005055 is about 2001.2633509861. The cubic root of 4005055 is about 158.8069463172.

The spelling of 4005055 in words is "four million, five thousand, fifty-five".