12315553 has 8 divisors (see below), whose sum is σ = 13111200. Its totient is φ = 11534688.

The previous prime is 12315529. The next prime is 12315559. The reversal of 12315553 is 35551321.

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

It is a cyclic number.

It is not a de Polignac number, because 12315553 - 2⁵ = 12315521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12315559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951 + ... + 5332.

It is an arithmetic number, because the mean of its divisors is an integer number (1638900).

Almost surely, 2^12315553 is an apocalyptic number.

It is an amenable number.

12315553 is a deficient number, since it is larger than the sum of its proper divisors (795647).

12315553 is an equidigital number, since it uses as much as digits as its factorization.

12315553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391.

The product of its digits is 2250, while the sum is 25.

The square root of 12315553 is about 3509.3522194274. The cubic root of 12315553 is about 230.9322777684.

Adding to 12315553 its reverse (35551321), we get a palindrome (47866874).

The spelling of 12315553 in words is "twelve million, three hundred fifteen thousand, five hundred fifty-three".