263455 has 4 divisors (see below), whose sum is σ = 316152. Its totient is φ = 210760.

The previous prime is 263443. The next prime is 263489. The reversal of 263455 is 554362.

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

It is not a de Polignac number, because 263455 - 2⁵ = 263423 is a prime.

It is a d-powerful number, because it can be written as 2¹⁸ + 6² + 4² + 3² + 5⁴ + 5⁴ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26341 + ... + 26350.

It is an arithmetic number, because the mean of its divisors is an integer number (79038).

2²⁶³⁴⁵⁵ is an apocalyptic number.

263455 is a deficient number, since it is larger than the sum of its proper divisors (52697).

263455 is an equidigital number, since it uses as much as digits as its factorization.

263455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52696.

The product of its digits is 3600, while the sum is 25.

The square root of 263455 is about 513.2786767439. The cubic root of 263455 is about 64.1065120919.

It can be divided in two parts, 26 and 3455, that added together give a square (3481 = 59²).

The spelling of 263455 in words is "two hundred sixty-three thousand, four hundred fifty-five".