12555983 has 4 divisors (see below), whose sum is σ = 13697448. Its totient is φ = 11414520.

The previous prime is 12555947. The next prime is 12555989. The reversal of 12555983 is 38955521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38955521 = 11 ⋅3541411.

It is a cyclic number.

It is not a de Polignac number, because 12555983 - 2¹⁶ = 12490447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555989) 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, 570716 + ... + 570737.

It is an arithmetic number, because the mean of its divisors is an integer number (3424362).

Almost surely, 2^12555983 is an apocalyptic number.

12555983 is a deficient number, since it is larger than the sum of its proper divisors (1141465).

12555983 is a wasteful number, since it uses less digits than its factorization.

12555983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141464.

The product of its digits is 54000, while the sum is 38.

The square root of 12555983 is about 3543.4422529512. The cubic root of 12555983 is about 232.4253924874.

The spelling of 12555983 in words is "twelve million, five hundred fifty-five thousand, nine hundred eighty-three".