260181 has 6 divisors (see below), whose sum is σ = 375830. Its totient is φ = 173448.

The previous prime is 260179. The next prime is 260189. The reversal of 260181 is 181062.

It can be written as a sum of positive squares in only one way, i.e., 260100 + 81 = 510^2 + 9^2 .

It is not a de Polignac number, because 260181 - 2¹ = 260179 is a prime.

It is a super-2 number, since 2×260181² = 135388305522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14446 + ... + 14463.

2²⁶⁰¹⁸¹ is an apocalyptic number.

It is an amenable number.

260181 is a deficient number, since it is larger than the sum of its proper divisors (115649).

260181 is a wasteful number, since it uses less digits than its factorization.

260181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28915 (or 28912 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 260181 is about 510.0794055831. The cubic root of 260181 is about 63.8398502361.

It can be divided in two parts, 2601 and 81, that multiplied together give a square (210681 = 459²).

The spelling of 260181 in words is "two hundred sixty thousand, one hundred eighty-one".