265345 has 4 divisors (see below), whose sum is σ = 318420. Its totient is φ = 212272.

The previous prime is 265339. The next prime is 265381. The reversal of 265345 is 543562.

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 199809 + 65536 = 447^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 265345 - 2³ = 265337 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 6² + 3 + 5 + 4⁹ + 5⁵ .

265345 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26530 + ... + 26539.

It is an arithmetic number, because the mean of its divisors is an integer number (79605).

2²⁶⁵³⁴⁵ is an apocalyptic number.

It is an amenable number.

265345 is a deficient number, since it is larger than the sum of its proper divisors (53075).

265345 is an equidigital number, since it uses as much as digits as its factorization.

265345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53074.

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

The square root of 265345 is about 515.1164916793. The cubic root of 265345 is about 64.2594448812.

The spelling of 265345 in words is "two hundred sixty-five thousand, three hundred forty-five".