12609541 has 4 divisors (see below), whose sum is σ = 14410912. Its totient is φ = 10808172.

The previous prime is 12609533. The next prime is 12609551. The reversal of 12609541 is 14590621.

12609541 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14590621 = 1621 ⋅9001.

It is a cyclic number.

It is not a de Polignac number, because 12609541 - 2³ = 12609533 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 (12609551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900675 + ... + 900688.

It is an arithmetic number, because the mean of its divisors is an integer number (3602728).

Almost surely, 2^12609541 is an apocalyptic number.

It is an amenable number.

12609541 is a deficient number, since it is larger than the sum of its proper divisors (1801371).

12609541 is an equidigital number, since it uses as much as digits as its factorization.

12609541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801370.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12609541 is about 3550.9915516655. The cubic root of 12609541 is about 232.7553966913.

It can be divided in two parts, 1260 and 9541, that added together give a palindrome (10801).

The spelling of 12609541 in words is "twelve million, six hundred nine thousand, five hundred forty-one".