1255559 has 2 divisors, whose sum is σ = 1255560. Its totient is φ = 1255558.

The previous prime is 1255549. The next prime is 1255567. The reversal of 1255559 is 9555521.

It is a strong prime.

It is an emirp because it is prime and its reverse (9555521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1255559 - 2¹² = 1251463 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627779 + 627780.

It is an arithmetic number, because the mean of its divisors is an integer number (627780).

2^1255559 is an apocalyptic number.

1255559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255559 is an equidigital number, since it uses as much as digits as its factorization.

1255559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11250, while the sum is 32.

The square root of 1255559 is about 1120.5172912544. The cubic root of 1255559 is about 107.8811850644.

The spelling of 1255559 in words is "one million, two hundred fifty-five thousand, five hundred fifty-nine".