275449 has 2 divisors, whose sum is σ = 275450. Its totient is φ = 275448.

The previous prime is 275447. The next prime is 275453. The reversal of 275449 is 944572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243049 + 32400 = 493^2 + 180^2 .

It is a cyclic number.

It is not a de Polignac number, because 275449 - 2¹ = 275447 is a prime.

Together with 275447, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 275449.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137724 + 137725.

It is an arithmetic number, because the mean of its divisors is an integer number (137725).

2²⁷⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

275449 is a deficient number, since it is larger than the sum of its proper divisors (1).

275449 is an equidigital number, since it uses as much as digits as its factorization.

275449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 275449 is about 524.8323541856. The cubic root of 275449 is about 65.0649449504.

It can be divided in two parts, 27 and 5449, that added together give a square (5476 = 74²).

The spelling of 275449 in words is "two hundred seventy-five thousand, four hundred forty-nine".