182021 has 4 divisors (see below), whose sum is σ = 208032. Its totient is φ = 156012.

The previous prime is 182011. The next prime is 182027. The reversal of 182021 is 120281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120281 = 7 ⋅17183.

It is a cyclic number.

It is not a de Polignac number, because 182021 - 2⁶ = 181957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 181987 and 182005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (182027) 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, 12995 + ... + 13008.

It is an arithmetic number, because the mean of its divisors is an integer number (52008).

2¹⁸²⁰²¹ is an apocalyptic number.

It is an amenable number.

182021 is a deficient number, since it is larger than the sum of its proper divisors (26011).

182021 is an equidigital number, since it uses as much as digits as its factorization.

182021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26010.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 182021 is about 426.6391918237. The cubic root of 182021 is about 56.6726906322.

The spelling of 182021 in words is "one hundred eighty-two thousand, twenty-one".