182921 has 2 divisors, whose sum is σ = 182922. Its totient is φ = 182920.

The previous prime is 182899. The next prime is 182927. The reversal of 182921 is 129281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156025 + 26896 = 395^2 + 164^2 .

It is an emirp because it is prime and its reverse (129281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 182921 - 2⁶ = 182857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (182927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91460 + 91461.

It is an arithmetic number, because the mean of its divisors is an integer number (91461).

2¹⁸²⁹²¹ is an apocalyptic number.

It is an amenable number.

182921 is a deficient number, since it is larger than the sum of its proper divisors (1).

182921 is an equidigital number, since it uses as much as digits as its factorization.

182921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 23.

The square root of 182921 is about 427.6926466518. The cubic root of 182921 is about 56.7659428514.

The spelling of 182921 in words is "one hundred eighty-two thousand, nine hundred twenty-one".