12261567 has 4 divisors (see below), whose sum is σ = 16348760. Its totient is φ = 8174376.

The previous prime is 12261563. The next prime is 12261569. The reversal of 12261567 is 76516221.

12261567 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 is not a de Polignac number, because 12261567 - 2² = 12261563 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 (12261563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2043592 + ... + 2043597.

It is an arithmetic number, because the mean of its divisors is an integer number (4087190).

Almost surely, 2^12261567 is an apocalyptic number.

12261567 is a deficient number, since it is larger than the sum of its proper divisors (4087193).

12261567 is an equidigital number, since it uses as much as digits as its factorization.

12261567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087192.

The product of its digits is 5040, while the sum is 30.

The square root of 12261567 is about 3501.6520386812. The cubic root of 12261567 is about 230.5943481270.

Adding to 12261567 its reverse (76516221), we get a palindrome (88777788).

The spelling of 12261567 in words is "twelve million, two hundred sixty-one thousand, five hundred sixty-seven".