201901 has 4 divisors (see below), whose sum is σ = 230752. Its totient is φ = 173052.

The previous prime is 201893. The next prime is 201907. The reversal of 201901 is 109102.

201901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201901 - 2³ = 201893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201907) 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, 14415 + ... + 14428.

It is an arithmetic number, because the mean of its divisors is an integer number (57688).

2²⁰¹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

201901 is a deficient number, since it is larger than the sum of its proper divisors (28851).

201901 is an equidigital number, since it uses as much as digits as its factorization.

201901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28850.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 201901 is about 449.3339515327. Note that the first 3 decimals coincide. The cubic root of 201901 is about 58.6650560566.

The spelling of 201901 in words is "two hundred one thousand, nine hundred one".