12755775 has 24 divisors (see below), whose sum is σ = 21494160. Its totient is φ = 6672640.

The previous prime is 12755767. The next prime is 12755807. The reversal of 12755775 is 57755721.

It is not a de Polignac number, because 12755775 - 2³ = 12755767 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2371 + ... + 5579.

It is an arithmetic number, because the mean of its divisors is an integer number (895590).

Almost surely, 2^12755775 is an apocalyptic number.

12755775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12755775 is a deficient number, since it is larger than the sum of its proper divisors (8738385).

12755775 is a wasteful number, since it uses less digits than its factorization.

12755775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275 (or 3270 counting only the distinct ones).

The product of its digits is 85750, while the sum is 39.

The square root of 12755775 is about 3571.5227844716. The cubic root of 12755775 is about 233.6517025950.

It can be divided in two parts, 12755 and 775, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 12755775 in words is "twelve million, seven hundred fifty-five thousand, seven hundred seventy-five".