265538 has 16 divisors (see below), whose sum is σ = 490560. Its totient is φ = 104976.

The previous prime is 265513. The next prime is 265541. The reversal of 265538 is 835562.

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 265538.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 265538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548 + ... + 911.

It is an arithmetic number, because the mean of its divisors is an integer number (30660).

2²⁶⁵⁵³⁸ is an apocalyptic number.

265538 is a deficient number, since it is larger than the sum of its proper divisors (225022).

265538 is a wasteful number, since it uses less digits than its factorization.

265538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481.

The product of its digits is 7200, while the sum is 29.

The square root of 265538 is about 515.3037938925. The cubic root of 265538 is about 64.2750209139.

The spelling of 265538 in words is "two hundred sixty-five thousand, five hundred thirty-eight".