201955 has 12 divisors (see below), whose sum is σ = 263520. Its totient is φ = 148512.

The previous prime is 201953. The next prime is 201961. The reversal of 201955 is 559102.

201955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201955 - 2¹ = 201953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 726 + ... + 964.

It is an arithmetic number, because the mean of its divisors is an integer number (21960).

2²⁰¹⁹⁵⁵ is an apocalyptic number.

201955 is a deficient number, since it is larger than the sum of its proper divisors (61565).

201955 is a wasteful number, since it uses less digits than its factorization.

201955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 201955 is about 449.3940364535. The cubic root of 201955 is about 58.6702857329.

It can be divided in two parts, 201 and 955, that added together give a square (1156 = 34²).

The spelling of 201955 in words is "two hundred one thousand, nine hundred fifty-five".