129527161 has 9 divisors (see below), whose sum is σ = 136931781. Its totient is φ = 122505084.

The previous prime is 129527149. The next prime is 129527183. The reversal of 129527161 is 161725921.

The square root of 129527161 is 11381.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 129527161 - 2⁷ = 129527033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129527141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 215940 + ... + 216538.

Almost surely, 2^129527161 is an apocalyptic number.

129527161 is the 11381-st square number.

129527161 is the 5691-st centered octagonal number.

It is an amenable number.

129527161 is a deficient number, since it is larger than the sum of its proper divisors (7404620).

129527161 is an frugal number, since it uses more digits than its factorization.

129527161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 618 counting only the distinct ones).

The product of its digits is 7560, while the sum is 34.

The cubic root of 129527161 is about 505.9647746365.

The spelling of 129527161 in words is "one hundred twenty-nine million, five hundred twenty-seven thousand, one hundred sixty-one".