12315255 has 16 divisors (see below), whose sum is σ = 19755360. Its totient is φ = 6551168.

The previous prime is 12315253. The next prime is 12315271. The reversal of 12315255 is 55251321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12315255 - 2¹ = 12315253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6829 + ... + 8441.

It is an arithmetic number, because the mean of its divisors is an integer number (1234710).

Almost surely, 2^12315255 is an apocalyptic number.

12315255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12315255 is a deficient number, since it is larger than the sum of its proper divisors (7440105).

12315255 is a wasteful number, since it uses less digits than its factorization.

12315255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130.

The product of its digits is 1500, while the sum is 24.

The square root of 12315255 is about 3509.3097611924. The cubic root of 12315255 is about 230.9304151271.

Adding to 12315255 its reverse (55251321), we get a palindrome (67566576).

The spelling of 12315255 in words is "twelve million, three hundred fifteen thousand, two hundred fifty-five".