275306 has 4 divisors (see below), whose sum is σ = 412962. Its totient is φ = 137652.

The previous prime is 275299. The next prime is 275309. The reversal of 275306 is 603572.

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., 241081 + 34225 = 491^2 + 185^2 .

It is a plaindrome in base 15.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (275309) by changing a digit.

275306 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, 68825 + ... + 68828.

2²⁷⁵³⁰⁶ is an apocalyptic number.

275306 is a deficient number, since it is larger than the sum of its proper divisors (137656).

275306 is a wasteful number, since it uses less digits than its factorization.

275306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137655.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 275306 is about 524.6961025203. The cubic root of 275306 is about 65.0536834613.

Adding to 275306 its reverse (603572), we get a palindrome (878878).

The spelling of 275306 in words is "two hundred seventy-five thousand, three hundred six".