12205455 has 8 divisors (see below), whose sum is σ = 19528752. Its totient is φ = 6509568.

The previous prime is 12205447. The next prime is 12205463. The reversal of 12205455 is 55450221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12205447) and next prime (12205463).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12205455 - 2³ = 12205447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406834 + ... + 406863.

It is an arithmetic number, because the mean of its divisors is an integer number (2441094).

Almost surely, 2^12205455 is an apocalyptic number.

12205455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12205455 is a deficient number, since it is larger than the sum of its proper divisors (7323297).

12205455 is an equidigital number, since it uses as much as digits as its factorization.

12205455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813705.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 12205455 is about 3493.6306330235. The cubic root of 12205455 is about 230.2420577025.

Adding to 12205455 its reverse (55450221), we get a palindrome (67655676).

The spelling of 12205455 in words is "twelve million, two hundred five thousand, four hundred fifty-five".