275489 has 2 divisors, whose sum is σ = 275490. Its totient is φ = 275488.

The previous prime is 275461. The next prime is 275491. The reversal of 275489 is 984572.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180625 + 94864 = 425^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 275489 - 2¹² = 271393 is a prime.

Together with 275491, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (275419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137744 + 137745.

It is an arithmetic number, because the mean of its divisors is an integer number (137745).

2²⁷⁵⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

275489 is a deficient number, since it is larger than the sum of its proper divisors (1).

275489 is an equidigital number, since it uses as much as digits as its factorization.

275489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 275489 is about 524.8704602090. The cubic root of 275489 is about 65.0680943196.

The spelling of 275489 in words is "two hundred seventy-five thousand, four hundred eighty-nine".