181282 has 4 divisors (see below), whose sum is σ = 271926. Its totient is φ = 90640.

The previous prime is 181277. The next prime is 181283. The reversal of 181282 is 282181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 282181 = 269 ⋅1049.

It can be written as a sum of positive squares in only one way, i.e., 123201 + 58081 = 351^2 + 241^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (181283) by changing a digit.

181282 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45319 + ... + 45322.

2¹⁸¹²⁸² is an apocalyptic number.

181282 is a deficient number, since it is larger than the sum of its proper divisors (90644).

181282 is an equidigital number, since it uses as much as digits as its factorization.

181282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90643.

The product of its digits is 256, while the sum is 22.

The square root of 181282 is about 425.7722395836. The cubic root of 181282 is about 56.5958901068.

The spelling of 181282 in words is "one hundred eighty-one thousand, two hundred eighty-two".