12056539 has 8 divisors (see below), whose sum is σ = 13186368. Its totient is φ = 10932360.

The previous prime is 12056521. The next prime is 12056549. The reversal of 12056539 is 93565021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12056539 - 2⁹ = 12056027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12056539.

It is not an unprimeable number, because it can be changed into a prime (12056509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3964 + ... + 6310.

It is an arithmetic number, because the mean of its divisors is an integer number (1648296).

Almost surely, 2^12056539 is an apocalyptic number.

12056539 is a deficient number, since it is larger than the sum of its proper divisors (1129829).

12056539 is a wasteful number, since it uses less digits than its factorization.

12056539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 12056539 is about 3472.2527269771. The cubic root of 12056539 is about 229.3018463866.

It can be divided in two parts, 1205 and 6539, that added together give a square (7744 = 88²).

The spelling of 12056539 in words is "twelve million, fifty-six thousand, five hundred thirty-nine".