12151255 has 4 divisors (see below), whose sum is σ = 14581512. Its totient is φ = 9721000.

The previous prime is 12151247. The next prime is 12151267. The reversal of 12151255 is 55215121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12151255 - 2³ = 12151247 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215121 + ... + 1215130.

It is an arithmetic number, because the mean of its divisors is an integer number (3645378).

Almost surely, 2^12151255 is an apocalyptic number.

12151255 is a deficient number, since it is larger than the sum of its proper divisors (2430257).

12151255 is an equidigital number, since it uses as much as digits as its factorization.

12151255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430256.

The product of its digits is 500, while the sum is 22.

The square root of 12151255 is about 3485.8650289419. The cubic root of 12151255 is about 229.9007448228.

Adding to 12151255 its reverse (55215121), we get a palindrome (67366376).

The spelling of 12151255 in words is "twelve million, one hundred fifty-one thousand, two hundred fifty-five".