12361541 has 4 divisors (see below), whose sum is σ = 12663084. Its totient is φ = 12060000.

The previous prime is 12361537. The next prime is 12361543. The reversal of 12361541 is 14516321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14516321 = 37 ⋅392333.

It can be written as a sum of positive squares in 2 ways, for example, as 7317025 + 5044516 = 2705^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 12361541 - 2² = 12361537 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 (12361543) 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, 150710 + ... + 150791.

It is an arithmetic number, because the mean of its divisors is an integer number (3165771).

Almost surely, 2^12361541 is an apocalyptic number.

It is an amenable number.

12361541 is a deficient number, since it is larger than the sum of its proper divisors (301543).

12361541 is an equidigital number, since it uses as much as digits as its factorization.

12361541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301542.

The product of its digits is 720, while the sum is 23.

The square root of 12361541 is about 3515.8983204865. The cubic root of 12361541 is about 231.2193652138.

Adding to 12361541 its reverse (14516321), we get a palindrome (26877862).

The spelling of 12361541 in words is "twelve million, three hundred sixty-one thousand, five hundred forty-one".