12876557 has 2 divisors, whose sum is σ = 12876558. Its totient is φ = 12876556.

The previous prime is 12876541. The next prime is 12876559. The reversal of 12876557 is 75567821.

12876557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 17161 = 3586^2 + 131^2 .

It is a cyclic number.

It is not a de Polignac number, because 12876557 - 2⁴ = 12876541 is a prime.

Together with 12876559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12876559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6438278 + 6438279.

It is an arithmetic number, because the mean of its divisors is an integer number (6438279).

Almost surely, 2^12876557 is an apocalyptic number.

It is an amenable number.

12876557 is a deficient number, since it is larger than the sum of its proper divisors (1).

12876557 is an equidigital number, since it uses as much as digits as its factorization.

12876557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 41.

The square root of 12876557 is about 3588.3919797034. The cubic root of 12876557 is about 234.3868549144.

The spelling of 12876557 in words is "twelve million, eight hundred seventy-six thousand, five hundred fifty-seven".