129552546 has 16 divisors (see below), whose sum is σ = 274346784. Its totient is φ = 40643904.

The previous prime is 129552517. The next prime is 129552547. The reversal of 129552546 is 645255921.

It is not an unprimeable number, because it can be changed into a prime (129552547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634960 + ... + 635163.

It is an arithmetic number, because the mean of its divisors is an integer number (17146674).

Almost surely, 2^129552546 is an apocalyptic number.

129552546 is an abundant number, since it is smaller than the sum of its proper divisors (144794238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129552546 is a wasteful number, since it uses less digits than its factorization.

129552546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270145.

The product of its digits is 108000, while the sum is 39.

The square root of 129552546 is about 11382.1151812833. The cubic root of 129552546 is about 505.9978258172.

The spelling of 129552546 in words is "one hundred twenty-nine million, five hundred fifty-two thousand, five hundred forty-six".