129255553 has 8 divisors (see below), whose sum is σ = 147995072. Its totient is φ = 110584656.

The previous prime is 129255521. The next prime is 129255569. The reversal of 129255553 is 355552921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129255553 - 2⁵ = 129255521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129255853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13050 + ... + 20707.

It is an arithmetic number, because the mean of its divisors is an integer number (18499384).

Almost surely, 2^129255553 is an apocalyptic number.

It is an amenable number.

129255553 is a deficient number, since it is larger than the sum of its proper divisors (18739519).

129255553 is an equidigital number, since it uses as much as digits as its factorization.

129255553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34311.

The product of its digits is 67500, while the sum is 37.

The square root of 129255553 is about 11369.0612189398. The cubic root of 129255553 is about 505.6108713901.

The spelling of 129255553 in words is "one hundred twenty-nine million, two hundred fifty-five thousand, five hundred fifty-three".