53130729 has 8 divisors (see below), whose sum is σ = 75008160. Its totient is φ = 33336896.

The previous prime is 53130689. The next prime is 53130731. The reversal of 53130729 is 92703135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53130729 - 2¹¹ = 53128681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53130696 and 53130705.

It is not an unprimeable number, because it can be changed into a prime (53130769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520839 + ... + 520940.

It is an arithmetic number, because the mean of its divisors is an integer number (9376020).

Almost surely, 2^53130729 is an apocalyptic number.

It is an amenable number.

53130729 is a deficient number, since it is larger than the sum of its proper divisors (21877431).

53130729 is a wasteful number, since it uses less digits than its factorization.

53130729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041799.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 53130729 is about 7289.0828641195. The cubic root of 53130729 is about 375.9371617676.

The spelling of 53130729 in words is "fifty-three million, one hundred thirty thousand, seven hundred twenty-nine".