12543255 has 20 divisors (see below), whose sum is σ = 22485672. Its totient is φ = 6689520.

The previous prime is 12543241. The next prime is 12543269. The reversal of 12543255 is 55234521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12543241) and next prime (12543269).

It is not a de Polignac number, because 12543255 - 2⁶ = 12543191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15081 + ... + 15890.

Almost surely, 2^12543255 is an apocalyptic number.

12543255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12543255 is a deficient number, since it is larger than the sum of its proper divisors (9942417).

12543255 is an equidigital number, since it uses as much as digits as its factorization.

12543255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30988 (or 30979 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 12543255 is about 3541.6458038601. The cubic root of 12543255 is about 232.3468293946.

Adding to 12543255 its reverse (55234521), we get a palindrome (67777776).

The spelling of 12543255 in words is "twelve million, five hundred forty-three thousand, two hundred fifty-five".