12615133 has 4 divisors (see below), whose sum is σ = 12622528. Its totient is φ = 12607740.

The previous prime is 12615121. The next prime is 12615143. The reversal of 12615133 is 33151621.

It is a happy number.

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 12615133 - 2⁵ = 12615101 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 (12615143) 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, 310 + ... + 5032.

It is an arithmetic number, because the mean of its divisors is an integer number (3155632).

Almost surely, 2^12615133 is an apocalyptic number.

It is an amenable number.

12615133 is a deficient number, since it is larger than the sum of its proper divisors (7395).

12615133 is an equidigital number, since it uses as much as digits as its factorization.

12615133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7394.

The product of its digits is 540, while the sum is 22.

The square root of 12615133 is about 3551.7788500975. The cubic root of 12615133 is about 232.7897985732.

Adding to 12615133 its reverse (33151621), we get a palindrome (45766754).

The spelling of 12615133 in words is "twelve million, six hundred fifteen thousand, one hundred thirty-three".