201755 has 4 divisors (see below), whose sum is σ = 242112. Its totient is φ = 161400.

The previous prime is 201743. The next prime is 201757. The reversal of 201755 is 557102.

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

It is not a de Polignac number, because 201755 - 2⁸ = 201499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20171 + ... + 20180.

It is an arithmetic number, because the mean of its divisors is an integer number (60528).

2²⁰¹⁷⁵⁵ is an apocalyptic number.

201755 is a deficient number, since it is larger than the sum of its proper divisors (40357).

201755 is an equidigital number, since it uses as much as digits as its factorization.

201755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40356.

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

The square root of 201755 is about 449.1714594673. The cubic root of 201755 is about 58.6509118909.

Adding to 201755 its reverse (557102), we get a palindrome (758857).

The spelling of 201755 in words is "two hundred one thousand, seven hundred fifty-five".