12254155 has 4 divisors (see below), whose sum is σ = 14704992. Its totient is φ = 9803320.

The previous prime is 12254131. The next prime is 12254167. The reversal of 12254155 is 55145221.

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

It is not a de Polignac number, because 12254155 - 2⁹ = 12253643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1225411 + ... + 1225420.

It is an arithmetic number, because the mean of its divisors is an integer number (3676248).

Almost surely, 2^12254155 is an apocalyptic number.

12254155 is a deficient number, since it is larger than the sum of its proper divisors (2450837).

12254155 is an equidigital number, since it uses as much as digits as its factorization.

12254155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450836.

The product of its digits is 2000, while the sum is 25.

The square root of 12254155 is about 3500.5935211047. The cubic root of 12254155 is about 230.5478747354.

Adding to 12254155 its reverse (55145221), we get a palindrome (67399376).

The spelling of 12254155 in words is "twelve million, two hundred fifty-four thousand, one hundred fifty-five".