12151541 has 4 divisors (see below), whose sum is σ = 12160512. Its totient is φ = 12142572.

The previous prime is 12151523. The next prime is 12151553. The reversal of 12151541 is 14515121.

12151541 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12151541 - 2²² = 7957237 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 (12151501) 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, 1991 + ... + 5316.

It is an arithmetic number, because the mean of its divisors is an integer number (3040128).

Almost surely, 2^12151541 is an apocalyptic number.

It is an amenable number.

12151541 is a deficient number, since it is larger than the sum of its proper divisors (8971).

12151541 is an equidigital number, since it uses as much as digits as its factorization.

12151541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8970.

The product of its digits is 200, while the sum is 20.

The square root of 12151541 is about 3485.9060515166. The cubic root of 12151541 is about 229.9025485075.

Adding to 12151541 its reverse (14515121), we get a palindrome (26666662).

The spelling of 12151541 in words is "twelve million, one hundred fifty-one thousand, five hundred forty-one".