65129055 has 16 divisors (see below), whose sum is σ = 109691520. Its totient is φ = 32907168.

The previous prime is 65129039. The next prime is 65129059. The reversal of 65129055 is 55092156.

It is not a de Polignac number, because 65129055 - 2⁴ = 65129039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65129059) 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, 113977 + ... + 114546.

It is an arithmetic number, because the mean of its divisors is an integer number (6855720).

Almost surely, 2^65129055 is an apocalyptic number.

65129055 is a deficient number, since it is larger than the sum of its proper divisors (44562465).

65129055 is a wasteful number, since it uses less digits than its factorization.

65129055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228550.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 65129055 is about 8070.2574308383. The cubic root of 65129055 is about 402.3384998209.

The spelling of 65129055 in words is "sixty-five million, one hundred twenty-nine thousand, fifty-five".