201573 has 6 divisors (see below), whose sum is σ = 291174. Its totient is φ = 134376.

The previous prime is 201557. The next prime is 201577. The reversal of 201573 is 375102.

201573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 199809 + 1764 = 447^2 + 42^2 .

It is not a de Polignac number, because 201573 - 2⁴ = 201557 is a prime.

It is an Ulam number.

201573 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11190 + ... + 11207.

It is an arithmetic number, because the mean of its divisors is an integer number (48529).

2²⁰¹⁵⁷³ is an apocalyptic number.

It is an amenable number.

201573 is a deficient number, since it is larger than the sum of its proper divisors (89601).

201573 is a wasteful number, since it uses less digits than its factorization.

201573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22403 (or 22400 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 201573 is about 448.9688185164. The cubic root of 201573 is about 58.6332705647.

Adding to 201573 its reverse (375102), we get a palindrome (576675).

The spelling of 201573 in words is "two hundred one thousand, five hundred seventy-three".