1275539 has 2 divisors, whose sum is σ = 1275540. Its totient is φ = 1275538.

The previous prime is 1275523. The next prime is 1275541. The reversal of 1275539 is 9355721.

It is a strong prime.

It is an emirp because it is prime and its reverse (9355721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1275539 - 2⁴ = 1275523 is a prime.

It is a Sophie Germain prime.

Together with 1275541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1275559) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637769 + 637770.

It is an arithmetic number, because the mean of its divisors is an integer number (637770).

2^1275539 is an apocalyptic number.

1275539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275539 is an equidigital number, since it uses as much as digits as its factorization.

1275539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 32.

The square root of 1275539 is about 1129.3976270561. The cubic root of 1275539 is about 108.4504222517.

The spelling of 1275539 in words is "one million, two hundred seventy-five thousand, five hundred thirty-nine".