259081 has 3 divisors (see below), whose sum is σ = 259591. Its totient is φ = 258572.

The previous prime is 259033. The next prime is 259099. The reversal of 259081 is 180952.

The square root of 259081 is 509.

It is a perfect power (a square), and thus also a powerful number.

259081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 210681 + 48400 = 459^2 + 220^2 .

It is not a de Polignac number, because 259081 - 2⁹ = 258569 is a prime.

It is a super-2 number, since 2×259081² = 134245929122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259001) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 255 + ... + 763.

259081 is a Friedman number, since it can be written as (510-9+8)^2, using all its digits and the basic arithmetic operations.

2²⁵⁹⁰⁸¹ is an apocalyptic number.

259081 is the 509-th square number.

259081 is the 255-th centered octagonal number.

It is an amenable number.

259081 is a deficient number, since it is larger than the sum of its proper divisors (510).

259081 is an frugal number, since it uses more digits than its factorization.

259081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The cubic root of 259081 is about 63.7497552214.

Multiplying 259081 by its sum of digits (25), we get a square (6477025 = 2545²).

The spelling of 259081 in words is "two hundred fifty-nine thousand, eighty-one".