53129929 has 4 divisors (see below), whose sum is σ = 53234820. Its totient is φ = 53025040.

The previous prime is 53129927. The next prime is 53129933. The reversal of 53129929 is 92992135.

53129929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92992135 = 5 ⋅18598427.

It can be written as a sum of positive squares in 2 ways, for example, as 40513225 + 12616704 = 6365^2 + 3552^2 .

It is a cyclic number.

It is not a de Polignac number, because 53129929 - 2¹ = 53129927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53129891 and 53129900.

It is not an unprimeable number, because it can be changed into a prime (53129927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51682 + ... + 52699.

It is an arithmetic number, because the mean of its divisors is an integer number (13308705).

Almost surely, 2^53129929 is an apocalyptic number.

It is an amenable number.

53129929 is a deficient number, since it is larger than the sum of its proper divisors (104891).

53129929 is a wasteful number, since it uses less digits than its factorization.

53129929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104890.

The product of its digits is 43740, while the sum is 40.

The square root of 53129929 is about 7289.0279873245. The cubic root of 53129929 is about 375.9352749045.

The spelling of 53129929 in words is "fifty-three million, one hundred twenty-nine thousand, nine hundred twenty-nine".