262081 has 4 divisors (see below), whose sum is σ = 264132. Its totient is φ = 260032.

The previous prime is 262079. The next prime is 262103. The reversal of 262081 is 180262.

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 194481 + 67600 = 441^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 262081 - 2¹ = 262079 is a prime.

It is a super-2 number, since 2×262081² = 137372901122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (262051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820 + ... + 1093.

It is an arithmetic number, because the mean of its divisors is an integer number (66033).

2²⁶²⁰⁸¹ is an apocalyptic number.

262081 is the 274-th nonagonal number.

It is an amenable number.

262081 is a deficient number, since it is larger than the sum of its proper divisors (2051).

262081 is a wasteful number, since it uses less digits than its factorization.

262081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 262081 is about 511.9384728656. The cubic root of 262081 is about 63.9948726361.

It can be divided in two parts, 2620 and 81, that added together give a triangular number (2701 = T₇₃).

The spelling of 262081 in words is "two hundred sixty-two thousand, eighty-one".