129573552 has 90 divisors (see below), whose sum is σ = 352526916. Its totient is φ = 41009280.

The previous prime is 129573551. The next prime is 129573569. The reversal of 129573552 is 255375921.

It is a self number, because there is not a number n which added to its sum of digits gives 129573552.

It is not an unprimeable number, because it can be changed into a prime (129573551) 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 17 ways as a sum of consecutive naturals, for example, 2444758 + ... + 2444810.

Almost surely, 2^129573552 is an apocalyptic number.

129573552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129573552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176263458).

129573552 is an abundant number, since it is smaller than the sum of its proper divisors (222953364).

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

129573552 is an equidigital number, since it uses as much as digits as its factorization.

129573552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 89 counting only the distinct ones).

The product of its digits is 94500, while the sum is 39.

The square root of 129573552 is about 11383.0379073427. The cubic root of 129573552 is about 506.0251722910.

It can be divided in two parts, 1295 and 73552, that added together give a palindrome (74847).

The spelling of 129573552 in words is "one hundred twenty-nine million, five hundred seventy-three thousand, five hundred fifty-two".