53161728 has 36 divisors (see below), whose sum is σ = 141489768. Its totient is φ = 17720320.

The previous prime is 53161721. The next prime is 53161729. The reversal of 53161728 is 82716135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53161721) 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, 33843 + ... + 35378.

Almost surely, 2^53161728 is an apocalyptic number.

It is an amenable number.

53161728 is an abundant number, since it is smaller than the sum of its proper divisors (88328040).

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

53161728 is an equidigital number, since it uses as much as digits as its factorization.

53161728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69240 (or 69226 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 53161728 is about 7291.2089532532. The cubic root of 53161728 is about 376.0102607733.

The spelling of 53161728 in words is "fifty-three million, one hundred sixty-one thousand, seven hundred twenty-eight".