275321 has 2 divisors, whose sum is σ = 275322.
Its totient is φ = 275320.
The previous prime is 275309. The next prime is 275323. The reversal of 275321 is 123572.
Adding to 275321 its reverse (123572), we get a palindrome (398893).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 215296 + 60025 = 464^2 + 245^2
It is a cyclic number.
It is not a de Polignac number, because 275321 - 218 = 13177 is a prime.
Together with 275323, it forms a pair of twin primes.
It is a Chen prime.
It is a plaindrome in base 15.
It is a junction number, because it is equal to n+sod(n) for n = 275293 and 275302.
It is not a weakly prime, because it can be changed into another prime (275323) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137660 + 137661.
It is an arithmetic number, because the mean of its divisors is an integer number (137661).
2275321 is an apocalyptic number.
It is an amenable number.
275321 is a deficient number, since it is larger than the sum of its proper divisors (1).
275321 is an equidigital number, since it uses as much as digits as its factorization.
275321 is an evil number, because the sum of its binary digits is even.
The product of its digits is 420, while the sum is 20.
The square root of 275321 is about 524.7103963140.
The cubic root of 275321 is about 65.0548649194.
The spelling of 275321 in words is "two hundred seventy-five thousand, three hundred twenty-one".