182081 has 4 divisors (see below), whose sum is σ = 186564. Its totient is φ = 177600.

The previous prime is 182059. The next prime is 182089. The reversal of 182081 is 180281.

182081 = T₇₃ + T₇₄ + ... + T₁₁₃.

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 33856 + 148225 = 184^2 + 385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-182081 is a prime.

It is a super-2 number, since 2×182081² = 66306981122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (182089) 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, 2180 + ... + 2261.

It is an arithmetic number, because the mean of its divisors is an integer number (46641).

2¹⁸²⁰⁸¹ is an apocalyptic number.

It is an amenable number.

182081 is a deficient number, since it is larger than the sum of its proper divisors (4483).

182081 is an equidigital number, since it uses as much as digits as its factorization.

182081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 182081 is about 426.7095030580. The cubic root of 182081 is about 56.6789169978.

The spelling of 182081 in words is "one hundred eighty-two thousand, eighty-one".