12878057 has 4 divisors (see below), whose sum is σ = 12929616. Its totient is φ = 12826500.

The previous prime is 12878053. The next prime is 12878069. The reversal of 12878057 is 75087821.

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.

It is a cyclic number.

It is not a de Polignac number, because 12878057 - 2² = 12878053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12878057.

It is not an unprimeable number, because it can be changed into a prime (12878053) 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, 25403 + ... + 25904.

It is an arithmetic number, because the mean of its divisors is an integer number (3232404).

Almost surely, 2^12878057 is an apocalyptic number.

It is an amenable number.

12878057 is a deficient number, since it is larger than the sum of its proper divisors (51559).

12878057 is an equidigital number, since it uses as much as digits as its factorization.

12878057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51558.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 12878057 is about 3588.6009808838. The cubic root of 12878057 is about 234.3959558625.

The spelling of 12878057 in words is "twelve million, eight hundred seventy-eight thousand, fifty-seven".