53382729 has 4 divisors (see below), whose sum is σ = 71176976. Its totient is φ = 35588484.

The previous prime is 53382709. The next prime is 53382731. The reversal of 53382729 is 92728335.

53382729 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53382729 - 2⁸ = 53382473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53382709) 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, 8897119 + ... + 8897124.

It is an arithmetic number, because the mean of its divisors is an integer number (17794244).

Almost surely, 2^53382729 is an apocalyptic number.

It is an amenable number.

53382729 is a deficient number, since it is larger than the sum of its proper divisors (17794247).

53382729 is a wasteful number, since it uses less digits than its factorization.

53382729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17794246.

The product of its digits is 90720, while the sum is 39.

The square root of 53382729 is about 7306.3485408239. The cubic root of 53382729 is about 376.5305834499.

The spelling of 53382729 in words is "fifty-three million, three hundred eighty-two thousand, seven hundred twenty-nine".