12195455 has 4 divisors (see below), whose sum is σ = 14634552. Its totient is φ = 9756360.

The previous prime is 12195437. The next prime is 12195461. The reversal of 12195455 is 55459121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55459121 = 43 ⋅1289747.

It is not a de Polignac number, because 12195455 - 2⁸ = 12195199 is a prime.

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, 1219541 + ... + 1219550.

It is an arithmetic number, because the mean of its divisors is an integer number (3658638).

Almost surely, 2^12195455 is an apocalyptic number.

12195455 is a deficient number, since it is larger than the sum of its proper divisors (2439097).

12195455 is an equidigital number, since it uses as much as digits as its factorization.

12195455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439096.

The product of its digits is 9000, while the sum is 32.

The square root of 12195455 is about 3492.1991638508. The cubic root of 12195455 is about 230.1791609715.

The spelling of 12195455 in words is "twelve million, one hundred ninety-five thousand, four hundred fifty-five".