12000545 has 4 divisors (see below), whose sum is σ = 14400660. Its totient is φ = 9600432.

The previous prime is 12000523. The next prime is 12000551. The reversal of 12000545 is 54500021.

12000545 is digitally balanced in base 2, 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 2458624 + 9541921 = 1568^2 + 3089^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000545 - 2¹² = 11996449 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200050 + ... + 1200059.

It is an arithmetic number, because the mean of its divisors is an integer number (3600165).

Almost surely, 2^12000545 is an apocalyptic number.

It is an amenable number.

12000545 is a deficient number, since it is larger than the sum of its proper divisors (2400115).

12000545 is an equidigital number, since it uses as much as digits as its factorization.

12000545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400114.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 12000545 is about 3464.1802782188. The cubic root of 12000545 is about 228.9463143985.

Adding to 12000545 its reverse (54500021), we get a palindrome (66500566).

The spelling of 12000545 in words is "twelve million, five hundred forty-five", and thus it is an aban number.