12204545 has 16 divisors (see below), whose sum is σ = 15344640. Its totient is φ = 9307200.

The previous prime is 12204541. The next prime is 12204547. The reversal of 12204545 is 54540221.

It is a happy number.

It is not a de Polignac number, because 12204545 - 2² = 12204541 is a prime.

12204545 is a modest number, since divided by 4545 gives 1220 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 12204545.

It is not an unprimeable number, because it can be changed into a prime (12204541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10451 + ... + 11559.

It is an arithmetic number, because the mean of its divisors is an integer number (959040).

Almost surely, 2^12204545 is an apocalyptic number.

It is an amenable number.

12204545 is a deficient number, since it is larger than the sum of its proper divisors (3140095).

12204545 is a wasteful number, since it uses less digits than its factorization.

12204545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12204545 is about 3493.5003935881. The cubic root of 12204545 is about 230.2363355212.

Adding to 12204545 its reverse (54540221), we get a palindrome (66744766).

The spelling of 12204545 in words is "twelve million, two hundred four thousand, five hundred forty-five".