53129920 has 28 divisors (see below), whose sum is σ = 126516384. Its totient is φ = 21251840.

The previous prime is 53129917. The next prime is 53129927. The reversal of 53129920 is 2992135.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82696 + ... + 83335.

Almost surely, 2^53129920 is an apocalyptic number.

It is an amenable number.

53129920 is an abundant number, since it is smaller than the sum of its proper divisors (73386464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53129920 is a wasteful number, since it uses less digits than its factorization.

53129920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166048 (or 166038 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 53129920 is about 7289.0273699582. The cubic root of 53129920 is about 375.9352536772.

The spelling of 53129920 in words is "fifty-three million, one hundred twenty-nine thousand, nine hundred twenty".