263155 has 4 divisors (see below), whose sum is σ = 315792. Its totient is φ = 210520.

The previous prime is 263129. The next prime is 263167. The reversal of 263155 is 551362.

It is a happy number.

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

It is not a de Polignac number, because 263155 - 2⁹ = 262643 is a prime.

It is a super-3 number, since 3×263155³ = 54670888633346625, which contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a zygodrome in base 3.

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, 26311 + ... + 26320.

It is an arithmetic number, because the mean of its divisors is an integer number (78948).

263155 is a Friedman number, since it can be written as 52631*5, using all its digits and the basic arithmetic operations.

2²⁶³¹⁵⁵ is an apocalyptic number.

263155 is a deficient number, since it is larger than the sum of its proper divisors (52637).

263155 is an equidigital number, since it uses as much as digits as its factorization.

263155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52636.

The product of its digits is 900, while the sum is 22.

The square root of 263155 is about 512.9863545943. The cubic root of 263155 is about 64.0821698473.

The spelling of 263155 in words is "two hundred sixty-three thousand, one hundred fifty-five".