12315545 has 8 divisors (see below), whose sum is σ = 16122240. Its totient is φ = 8956720.

The previous prime is 12315529. The next prime is 12315559. The reversal of 12315545 is 54551321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12315545 - 2⁴ = 12315529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111905 + ... + 112014.

It is an arithmetic number, because the mean of its divisors is an integer number (2015280).

Almost surely, 2^12315545 is an apocalyptic number.

It is an amenable number.

12315545 is a deficient number, since it is larger than the sum of its proper divisors (3806695).

12315545 is a wasteful number, since it uses less digits than its factorization.

12315545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223935.

The product of its digits is 3000, while the sum is 26.

The square root of 12315545 is about 3509.3510796157. The cubic root of 12315545 is about 230.9322277650.

Adding to 12315545 its reverse (54551321), we get a palindrome (66866866).

It can be divided in two parts, 1231 and 5545, that added together give a palindrome (6776).

The spelling of 12315545 in words is "twelve million, three hundred fifteen thousand, five hundred forty-five".