12092561 has 4 divisors (see below), whose sum is σ = 13022772. Its totient is φ = 11162352.

The previous prime is 12092557. The next prime is 12092653. The reversal of 12092561 is 16529021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16529021 = 2477 ⋅6673.

It can be written as a sum of positive squares in 2 ways, for example, as 3682561 + 8410000 = 1919^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 12092561 - 2² = 12092557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12092561.

It is not an unprimeable number, because it can be changed into a prime (12092551) 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, 465086 + ... + 465111.

It is an arithmetic number, because the mean of its divisors is an integer number (3255693).

Almost surely, 2^12092561 is an apocalyptic number.

It is an amenable number.

12092561 is a deficient number, since it is larger than the sum of its proper divisors (930211).

12092561 is an equidigital number, since it uses as much as digits as its factorization.

12092561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930210.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12092561 is about 3477.4359807191. The cubic root of 12092561 is about 229.5299853392.

The spelling of 12092561 in words is "twelve million, ninety-two thousand, five hundred sixty-one".