129528513 has 12 divisors (see below), whose sum is σ = 191448400. Its totient is φ = 84343896.

The previous prime is 129528493. The next prime is 129528523. The reversal of 129528513 is 315825921.

129528513 is a `hidden beast` number, since 129 + 528 + 5 + 1 + 3 = 666.

It is not a de Polignac number, because 129528513 - 2⁵ = 129528481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129528523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166963 + ... + 167736.

Almost surely, 2^129528513 is an apocalyptic number.

It is an amenable number.

129528513 is a deficient number, since it is larger than the sum of its proper divisors (61919887).

129528513 is a wasteful number, since it uses less digits than its factorization.

129528513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334748 (or 334745 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 129528513 is about 11381.0593970860. The cubic root of 129528513 is about 505.9665350446.

The spelling of 129528513 in words is "one hundred twenty-nine million, five hundred twenty-eight thousand, five hundred thirteen".