201853 has 4 divisors (see below), whose sum is σ = 204768. Its totient is φ = 198940.

The previous prime is 201847. The next prime is 201881. The reversal of 201853 is 358102.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 358102 = 2 ⋅179051.

It is a cyclic number.

It is not a de Polignac number, because 201853 - 2⁵ = 201821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201823) 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, 1351 + ... + 1492.

It is an arithmetic number, because the mean of its divisors is an integer number (51192).

2²⁰¹⁸⁵³ is an apocalyptic number.

It is an amenable number.

201853 is a deficient number, since it is larger than the sum of its proper divisors (2915).

201853 is an equidigital number, since it uses as much as digits as its factorization.

201853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 201853 is about 449.2805359683. The cubic root of 201853 is about 58.6604066725.

Adding to 201853 its reverse (358102), we get a palindrome (559955).

The spelling of 201853 in words is "two hundred one thousand, eight hundred fifty-three".