12478055 has 8 divisors (see below), whose sum is σ = 15256512. Its totient is φ = 9793888.

The previous prime is 12478049. The next prime is 12478057. The reversal of 12478055 is 55087421.

12478055 is nontrivially palindromic in base 7.

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 12478055 - 2²⁰ = 11429479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12478057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23279 + ... + 23808.

It is an arithmetic number, because the mean of its divisors is an integer number (1907064).

Almost surely, 2^12478055 is an apocalyptic number.

12478055 is a deficient number, since it is larger than the sum of its proper divisors (2778457).

12478055 is an equidigital number, since it uses as much as digits as its factorization.

12478055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47145.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 12478055 is about 3532.4290509506. The cubic root of 12478055 is about 231.9435492361.

The spelling of 12478055 in words is "twelve million, four hundred seventy-eight thousand, fifty-five".