129537955 has 16 divisors (see below), whose sum is σ = 162596160. Its totient is φ = 98885248.

The previous prime is 129537931. The next prime is 129538007. The reversal of 129537955 is 559735921.

It is a cyclic number.

It is not a de Polignac number, because 129537955 - 2⁷ = 129537827 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57429 + ... + 59641.

It is an arithmetic number, because the mean of its divisors is an integer number (10162260).

Almost surely, 2^129537955 is an apocalyptic number.

129537955 is a deficient number, since it is larger than the sum of its proper divisors (33058205).

129537955 is a wasteful number, since it uses less digits than its factorization.

129537955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750.

The product of its digits is 425250, while the sum is 46.

The square root of 129537955 is about 11381.4742015259. The cubic root of 129537955 is about 505.9788289142.

The spelling of 129537955 in words is "one hundred twenty-nine million, five hundred thirty-seven thousand, nine hundred fifty-five".