265393 has 4 divisors (see below), whose sum is σ = 271908. Its totient is φ = 258880.

The previous prime is 265381. The next prime is 265399. The reversal of 265393 is 393562.

265393 is nontrivially palindromic in base 7.

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 28224 + 237169 = 168^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 265393 - 2⁹ = 264881 is a prime.

It is a Duffinian number.

265393 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (265399) 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, 3196 + ... + 3277.

It is an arithmetic number, because the mean of its divisors is an integer number (67977).

2²⁶⁵³⁹³ is an apocalyptic number.

It is an amenable number.

265393 is a deficient number, since it is larger than the sum of its proper divisors (6515).

265393 is an equidigital number, since it uses as much as digits as its factorization.

265393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6514.

The product of its digits is 4860, while the sum is 28.

The square root of 265393 is about 515.1630809753. The cubic root of 265393 is about 64.2633194186.

The spelling of 265393 in words is "two hundred sixty-five thousand, three hundred ninety-three".