129553 has 2 divisors, whose sum is σ = 129554. Its totient is φ = 129552.

The previous prime is 129539. The next prime is 129581. The reversal of 129553 is 355921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66049 + 63504 = 257^2 + 252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129553 is a prime.

It is not a weakly prime, because it can be changed into another prime (129533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64776 + 64777.

It is an arithmetic number, because the mean of its divisors is an integer number (64777).

2¹²⁹⁵⁵³ is an apocalyptic number.

It is an amenable number.

129553 is a deficient number, since it is larger than the sum of its proper divisors (1).

129553 is an equidigital number, since it uses as much as digits as its factorization.

129553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 25.

The square root of 129553 is about 359.9347163028. The cubic root of 129553 is about 50.5998416884.

It can be divided in two parts, 1295 and 53, that multiplied together give a triangular number (68635 = T₃₇₀).

The spelling of 129553 in words is "one hundred twenty-nine thousand, five hundred fifty-three".