205453 has 2 divisors, whose sum is σ = 205454. Its totient is φ = 205452.

The previous prime is 205441. The next prime is 205463. The reversal of 205453 is 354502.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104329 + 101124 = 323^2 + 318^2 .

It is a cyclic number.

It is not a de Polignac number, because 205453 - 2⁵ = 205421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102726 + 102727.

It is an arithmetic number, because the mean of its divisors is an integer number (102727).

2²⁰⁵⁴⁵³ is an apocalyptic number.

It is an amenable number.

205453 is a deficient number, since it is larger than the sum of its proper divisors (1).

205453 is an equidigital number, since it uses as much as digits as its factorization.

205453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 205453 is about 453.2692356646. The cubic root of 205453 is about 59.0070852355.

Adding to 205453 its reverse (354502), we get a palindrome (559955).

The spelling of 205453 in words is "two hundred five thousand, four hundred fifty-three".