1255659 has 4 divisors (see below), whose sum is σ = 1674216. Its totient is φ = 837104.

The previous prime is 1255651. The next prime is 1255663. The reversal of 1255659 is 9565521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255659 - 2³ = 1255651 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1255651) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209274 + ... + 209279.

It is an arithmetic number, because the mean of its divisors is an integer number (418554).

2^1255659 is an apocalyptic number.

1255659 is a deficient number, since it is larger than the sum of its proper divisors (418557).

1255659 is an equidigital number, since it uses as much as digits as its factorization.

1255659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418556.

The product of its digits is 13500, while the sum is 33.

The square root of 1255659 is about 1120.5619126135. The cubic root of 1255659 is about 107.8840490827.

The spelling of 1255659 in words is "one million, two hundred fifty-five thousand, six hundred fifty-nine".