129563297 has 2 divisors, whose sum is σ = 129563298. Its totient is φ = 129563296.

The previous prime is 129563281. The next prime is 129563309. The reversal of 129563297 is 792365921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129254161 + 309136 = 11369^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 129563297 - 2⁴ = 129563281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129563267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64781648 + 64781649.

It is an arithmetic number, because the mean of its divisors is an integer number (64781649).

Almost surely, 2^129563297 is an apocalyptic number.

It is an amenable number.

129563297 is a deficient number, since it is larger than the sum of its proper divisors (1).

129563297 is an equidigital number, since it uses as much as digits as its factorization.

129563297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 129563297 is about 11382.5874475007. The cubic root of 129563297 is about 506.0118222800.

The spelling of 129563297 in words is "one hundred twenty-nine million, five hundred sixty-three thousand, two hundred ninety-seven".