1312559 has 2 divisors, whose sum is σ = 1312560. Its totient is φ = 1312558.

The previous prime is 1312547. The next prime is 1312561. The reversal of 1312559 is 9552131.

It is a strong prime.

It is an emirp because it is prime and its reverse (9552131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312559 - 2⁴ = 1312543 is a prime.

It is a super-2 number, since 2×1312559² = 3445622256962, which contains 22 as substring.

Together with 1312561, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656279 + 656280.

It is an arithmetic number, because the mean of its divisors is an integer number (656280).

2^1312559 is an apocalyptic number.

1312559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312559 is an equidigital number, since it uses as much as digits as its factorization.

1312559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 26.

The square root of 1312559 is about 1145.6696731606. The cubic root of 1312559 is about 109.4896190544.

The spelling of 1312559 in words is "one million, three hundred twelve thousand, five hundred fifty-nine".