129553135 has 16 divisors (see below), whose sum is σ = 162653184. Its totient is φ = 98873632.

The previous prime is 129553133. The next prime is 129553157. The reversal of 129553135 is 531355921.

It is a cyclic number.

It is not a de Polignac number, because 129553135 - 2¹ = 129553133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129553135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129553133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49674 + ... + 52216.

It is an arithmetic number, because the mean of its divisors is an integer number (10165824).

Almost surely, 2^129553135 is an apocalyptic number.

129553135 is a deficient number, since it is larger than the sum of its proper divisors (33100049).

129553135 is a wasteful number, since it uses less digits than its factorization.

129553135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014.

The product of its digits is 20250, while the sum is 34.

The square root of 129553135 is about 11382.1410551794. The cubic root of 129553135 is about 505.9985926419.

The spelling of 129553135 in words is "one hundred twenty-nine million, five hundred fifty-three thousand, one hundred thirty-five".