275389 has 2 divisors, whose sum is σ = 275390. Its totient is φ = 275388.

The previous prime is 275371. The next prime is 275393. The reversal of 275389 is 983572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267289 + 8100 = 517^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 275389 - 2⁵ = 275357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275309) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137694 + 137695.

It is an arithmetic number, because the mean of its divisors is an integer number (137695).

2²⁷⁵³⁸⁹ is an apocalyptic number.

It is an amenable number.

275389 is a deficient number, since it is larger than the sum of its proper divisors (1).

275389 is an equidigital number, since it uses as much as digits as its factorization.

275389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 275389 is about 524.7751899623. The cubic root of 275389 is about 65.0602203248.

The spelling of 275389 in words is "two hundred seventy-five thousand, three hundred eighty-nine".