2001755 has 8 divisors (see below), whose sum is σ = 2745312. Its totient is φ = 1372608.

The previous prime is 2001751. The next prime is 2001787. The reversal of 2001755 is 5571002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001755 - 2² = 2001751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001751) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28562 + ... + 28631.

It is an arithmetic number, because the mean of its divisors is an integer number (343164).

2^2001755 is an apocalyptic number.

2001755 is a deficient number, since it is larger than the sum of its proper divisors (743557).

2001755 is an equidigital number, since it uses as much as digits as its factorization.

2001755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57205.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 2001755 is about 1414.8339125141. The cubic root of 2001755 is about 126.0289469060.

Adding to 2001755 its reverse (5571002), we get a palindrome (7572757).

The spelling of 2001755 in words is "two million, one thousand, seven hundred fifty-five".