523453 has 4 divisors (see below), whose sum is σ = 598240. Its totient is φ = 448668.

The previous prime is 523433. The next prime is 523459. The reversal of 523453 is 354325.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523453 is a prime.

It is the 724-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523459) by changing a digit.

It is a nontrivial repunit in base 723.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37383 + ... + 37396.

It is an arithmetic number, because the mean of its divisors is an integer number (149560).

2⁵²³⁴⁵³ is an apocalyptic number.

It is an amenable number.

523453 is a deficient number, since it is larger than the sum of its proper divisors (74787).

523453 is an equidigital number, since it uses as much as digits as its factorization.

523453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74786.

The product of its digits is 1800, while the sum is 22.

The square root of 523453 is about 723.5005183136. The cubic root of 523453 is about 80.5921170715.

Adding to 523453 its reverse (354325), we get a palindrome (877778).

The spelling of 523453 in words is "five hundred twenty-three thousand, four hundred fifty-three".