405453 has 4 divisors (see below), whose sum is σ = 540608. Its totient is φ = 270300.

The previous prime is 405439. The next prime is 405473. The reversal of 405453 is 354504.

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.

It is not a de Polignac number, because 405453 - 2⁴ = 405437 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405413) 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, 67573 + ... + 67578.

It is an arithmetic number, because the mean of its divisors is an integer number (135152).

2⁴⁰⁵⁴⁵³ is an apocalyptic number.

It is an amenable number.

405453 is a deficient number, since it is larger than the sum of its proper divisors (135155).

405453 is a wasteful number, since it uses less digits than its factorization.

405453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135154.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 405453 is about 636.7519140136. The cubic root of 405453 is about 74.0139369903.

Adding to 405453 its reverse (354504), we get a palindrome (759957).

It can be divided in two parts, 405 and 453, that added together give a palindrome (858).

The spelling of 405453 in words is "four hundred five thousand, four hundred fifty-three".