129548227 has 2 divisors, whose sum is σ = 129548228. Its totient is φ = 129548226.

The previous prime is 129548203. The next prime is 129548257. The reversal of 129548227 is 722845921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129548227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129548227.

It is not a weakly prime, because it can be changed into another prime (129548257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64774113 + 64774114.

It is an arithmetic number, because the mean of its divisors is an integer number (64774114).

Almost surely, 2^129548227 is an apocalyptic number.

129548227 is a deficient number, since it is larger than the sum of its proper divisors (1).

129548227 is an equidigital number, since it uses as much as digits as its factorization.

129548227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 129548227 is about 11381.9254522247. The cubic root of 129548227 is about 505.9922027992.

The spelling of 129548227 in words is "one hundred twenty-nine million, five hundred forty-eight thousand, two hundred twenty-seven".