12555755 has 4 divisors (see below), whose sum is σ = 15066912. Its totient is φ = 10044600.

The previous prime is 12555749. The next prime is 12555757. The reversal of 12555755 is 55755521.

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

It is a de Polignac number, because none of the positive numbers 2^k-12555755 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12555757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255571 + ... + 1255580.

It is an arithmetic number, because the mean of its divisors is an integer number (3766728).

Almost surely, 2^12555755 is an apocalyptic number.

12555755 is a deficient number, since it is larger than the sum of its proper divisors (2511157).

12555755 is an equidigital number, since it uses as much as digits as its factorization.

12555755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511156.

The product of its digits is 43750, while the sum is 35.

The square root of 12555755 is about 3543.4100806991. The cubic root of 12555755 is about 232.4239856332.

The spelling of 12555755 in words is "twelve million, five hundred fifty-five thousand, seven hundred fifty-five".