12855477 has 4 divisors (see below), whose sum is σ = 17140640. Its totient is φ = 8570316.

The previous prime is 12855463. The next prime is 12855481. The reversal of 12855477 is 77455821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77455821 = 3 ⋅25818607.

It is not a de Polignac number, because 12855477 - 2⁸ = 12855221 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 (12855407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2142577 + ... + 2142582.

It is an arithmetic number, because the mean of its divisors is an integer number (4285160).

Almost surely, 2^12855477 is an apocalyptic number.

It is an amenable number.

12855477 is a deficient number, since it is larger than the sum of its proper divisors (4285163).

12855477 is an equidigital number, since it uses as much as digits as its factorization.

12855477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285162.

The product of its digits is 78400, while the sum is 39.

The square root of 12855477 is about 3585.4535277981. The cubic root of 12855477 is about 234.2588814309.

The spelling of 12855477 in words is "twelve million, eight hundred fifty-five thousand, four hundred seventy-seven".