1255806 has 12 divisors (see below), whose sum is σ = 2720952. Its totient is φ = 418596.

The previous prime is 1255801. The next prime is 1255811. The reversal of 1255806 is 6085521.

It is an interprime number because it is at equal distance from previous prime (1255801) and next prime (1255811).

It is a self number, because there is not a number n which added to its sum of digits gives 1255806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34866 + ... + 34901.

It is an arithmetic number, because the mean of its divisors is an integer number (226746).

2^1255806 is an apocalyptic number.

1255806 is an abundant number, since it is smaller than the sum of its proper divisors (1465146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255806 is a wasteful number, since it uses less digits than its factorization.

1255806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69775 (or 69772 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1255806 is about 1120.6275027858. The cubic root of 1255806 is about 107.8882589137. Note that the first 3 decimals are identical.

The spelling of 1255806 in words is "one million, two hundred fifty-five thousand, eight hundred six".