202453 has 4 divisors (see below), whose sum is σ = 214380. Its totient is φ = 190528.

The previous prime is 202441. The next prime is 202471. The reversal of 202453 is 354202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354202 = 2 ⋅177101.

It can be written as a sum of positive squares in 2 ways, for example, as 114244 + 88209 = 338^2 + 297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202453 is a prime.

It is a Duffinian number.

202453 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202403) 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, 5938 + ... + 5971.

It is an arithmetic number, because the mean of its divisors is an integer number (53595).

2²⁰²⁴⁵³ is an apocalyptic number.

It is an amenable number.

202453 is a deficient number, since it is larger than the sum of its proper divisors (11927).

202453 is a wasteful number, since it uses less digits than its factorization.

202453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11926.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 202453 is about 449.9477747472. The cubic root of 202453 is about 58.7184710863.

Adding to 202453 its reverse (354202), we get a palindrome (556655).

The spelling of 202453 in words is "two hundred two thousand, four hundred fifty-three".