12055478 has 4 divisors (see below), whose sum is σ = 18083220. Its totient is φ = 6027738.

The previous prime is 12055469. The next prime is 12055487. The reversal of 12055478 is 87455021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87455021 = 17 ⋅5144413.

It is an interprime number because it is at equal distance from previous prime (12055469) and next prime (12055487).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3013868 + ... + 3013871.

It is an arithmetic number, because the mean of its divisors is an integer number (4520805).

Almost surely, 2^12055478 is an apocalyptic number.

12055478 is a deficient number, since it is larger than the sum of its proper divisors (6027742).

12055478 is an equidigital number, since it uses as much as digits as its factorization.

12055478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027741.

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

The square root of 12055478 is about 3472.0999409579. The cubic root of 12055478 is about 229.2951198460.

The spelling of 12055478 in words is "twelve million, fifty-five thousand, four hundred seventy-eight".