1255166 has 16 divisors (see below), whose sum is σ = 2090880. Its totient is φ = 560280.

The previous prime is 1255157. The next prime is 1255169. The reversal of 1255166 is 6615521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815 + ... + 1781.

It is an arithmetic number, because the mean of its divisors is an integer number (130680).

2^1255166 is an apocalyptic number.

1255166 is a deficient number, since it is larger than the sum of its proper divisors (835714).

1255166 is a wasteful number, since it uses less digits than its factorization.

1255166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its digits is 1800, while the sum is 26.

The square root of 1255166 is about 1120.3419120965. The cubic root of 1255166 is about 107.8699279988.

The spelling of 1255166 in words is "one million, two hundred fifty-five thousand, one hundred sixty-six".