82154 has 4 divisors (see below), whose sum is σ = 123234. Its totient is φ = 41076.

The previous prime is 82153. The next prime is 82163. The reversal of 82154 is 45128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51529 + 30625 = 227^2 + 175^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20537 + ... + 20540.

2⁸²¹⁵⁴ is an apocalyptic number.

82154 is a deficient number, since it is larger than the sum of its proper divisors (41080).

82154 is a wasteful number, since it uses less digits than its factorization.

82154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41079.

The product of its digits is 320, while the sum is 20.

The square root of 82154 is about 286.6251907980. The cubic root of 82154 is about 43.4719950101.

The spelling of 82154 in words is "eighty-two thousand, one hundred fifty-four".