12001573 has 4 divisors (see below), whose sum is σ = 12042828. Its totient is φ = 11960320.

The previous prime is 12001571. The next prime is 12001667. The reversal of 12001573 is 37510021.

12001573 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 859329 = 3338^2 + 927^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001573 - 2¹ = 12001571 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 12001573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20188 + ... + 20773.

It is an arithmetic number, because the mean of its divisors is an integer number (3010707).

Almost surely, 2^12001573 is an apocalyptic number.

It is an amenable number.

12001573 is a deficient number, since it is larger than the sum of its proper divisors (41255).

12001573 is an equidigital number, since it uses as much as digits as its factorization.

12001573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41254.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 12001573 is about 3464.3286506912. The cubic root of 12001573 is about 228.9528516042.

Adding to 12001573 its reverse (37510021), we get a palindrome (49511594).

The spelling of 12001573 in words is "twelve million, one thousand, five hundred seventy-three".