263453 has 4 divisors (see below), whose sum is σ = 265980. Its totient is φ = 260928.

The previous prime is 263443. The next prime is 263489. The reversal of 263453 is 354362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 228484 + 34969 = 478^2 + 187^2 .

It is a cyclic number.

It is not a de Polignac number, because 263453 - 2⁴ = 263437 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 6² + 4⁹ + 3³ + 5 + 3⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100 + ... + 1317.

It is an arithmetic number, because the mean of its divisors is an integer number (66495).

2²⁶³⁴⁵³ is an apocalyptic number.

It is an amenable number.

263453 is a deficient number, since it is larger than the sum of its proper divisors (2527).

263453 is a wasteful number, since it uses less digits than its factorization.

263453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526.

The product of its digits is 2160, while the sum is 23.

The square root of 263453 is about 513.2767284808. The cubic root of 263453 is about 64.1063498715.

Subtracting 263453 from its reverse (354362), we obtain a palindrome (90909).

The spelling of 263453 in words is "two hundred sixty-three thousand, four hundred fifty-three".