4001755 has 4 divisors (see below), whose sum is σ = 4802112. Its totient is φ = 3201400.

The previous prime is 4001743. The next prime is 4001771. The reversal of 4001755 is 5571004.

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

It is not a de Polignac number, because 4001755 - 2⁹ = 4001243 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 400171 + ... + 400180.

It is an arithmetic number, because the mean of its divisors is an integer number (1200528).

Almost surely, 2^4001755 is an apocalyptic number.

4001755 is a deficient number, since it is larger than the sum of its proper divisors (800357).

4001755 is an equidigital number, since it uses as much as digits as its factorization.

4001755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800356.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 4001755 is about 2000.4387018852. The cubic root of 4001755 is about 158.7633175427.

Adding to 4001755 its reverse (5571004), we get a palindrome (9572759).

The spelling of 4001755 in words is "four million, one thousand, seven hundred fifty-five".