12655457 has 2 divisors, whose sum is σ = 12655458. Its totient is φ = 12655456.

The previous prime is 12655439. The next prime is 12655481. The reversal of 12655457 is 75455621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7268416 + 5387041 = 2696^2 + 2321^2 .

It is a cyclic number.

It is not a de Polignac number, because 12655457 - 2¹⁴ = 12639073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12655417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327728 + 6327729.

It is an arithmetic number, because the mean of its divisors is an integer number (6327729).

Almost surely, 2^12655457 is an apocalyptic number.

It is an amenable number.

12655457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12655457 is an equidigital number, since it uses as much as digits as its factorization.

12655457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 35.

The square root of 12655457 is about 3557.4509132242. The cubic root of 12655457 is about 233.0375706145.

The spelling of 12655457 in words is "twelve million, six hundred fifty-five thousand, four hundred fifty-seven".