265501 has 4 divisors (see below), whose sum is σ = 269212. Its totient is φ = 261792.

The previous prime is 265493. The next prime is 265511. The reversal of 265501 is 105562.

It is a happy number.

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 63001 + 202500 = 251^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 265501 - 2³ = 265493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265511) 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, 1746 + ... + 1891.

It is an arithmetic number, because the mean of its divisors is an integer number (67303).

2²⁶⁵⁵⁰¹ is an apocalyptic number.

It is an amenable number.

265501 is a deficient number, since it is larger than the sum of its proper divisors (3711).

265501 is an equidigital number, since it uses as much as digits as its factorization.

265501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 265501 is about 515.2678914895. The cubic root of 265501 is about 64.2720354200.

The spelling of 265501 in words is "two hundred sixty-five thousand, five hundred one".