12145655 has 8 divisors (see below), whose sum is σ = 15342000. Its totient is φ = 9205056.

The previous prime is 12145607. The next prime is 12145669. The reversal of 12145655 is 55654121.

It is a happy number.

12145655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12145655 - 2¹⁰ = 12144631 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, 63830 + ... + 64019.

It is an arithmetic number, because the mean of its divisors is an integer number (1917750).

Almost surely, 2^12145655 is an apocalyptic number.

12145655 is a deficient number, since it is larger than the sum of its proper divisors (3196345).

12145655 is a wasteful number, since it uses less digits than its factorization.

12145655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127873.

The product of its digits is 6000, while the sum is 29.

The square root of 12145655 is about 3485.0616924238. The cubic root of 12145655 is about 229.8654222163.

Adding to 12145655 its reverse (55654121), we get a palindrome (67799776).

It can be divided in two parts, 121 and 45655, that multiplied together give a palindrome (5524255).

The spelling of 12145655 in words is "twelve million, one hundred forty-five thousand, six hundred fifty-five".