265523 has 4 divisors (see below), whose sum is σ = 281160. Its totient is φ = 249888.

The previous prime is 265513. The next prime is 265541. The reversal of 265523 is 325562.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 265523 - 2⁶ = 265459 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 6 + 5 + 5⁵ + 2¹⁷ + 3⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7793 + ... + 7826.

It is an arithmetic number, because the mean of its divisors is an integer number (70290).

2²⁶⁵⁵²³ is an apocalyptic number.

265523 is a deficient number, since it is larger than the sum of its proper divisors (15637).

265523 is a wasteful number, since it uses less digits than its factorization.

265523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15636.

The product of its digits is 1800, while the sum is 23.

The square root of 265523 is about 515.2892391657. The cubic root of 265523 is about 64.2738106119.

The spelling of 265523 in words is "two hundred sixty-five thousand, five hundred twenty-three".