53936729 has 16 divisors (see below), whose sum is σ = 67651200. Its totient is φ = 41775360.

The previous prime is 53936719. The next prime is 53936731. The reversal of 53936729 is 92763935.

It is not a de Polignac number, because 53936729 - 2¹⁶ = 53871193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53936729.

It is not an unprimeable number, because it can be changed into a prime (53936719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11297 + ... + 15345.

It is an arithmetic number, because the mean of its divisors is an integer number (4228200).

Almost surely, 2^53936729 is an apocalyptic number.

It is an amenable number.

53936729 is a deficient number, since it is larger than the sum of its proper divisors (13714471).

53936729 is a wasteful number, since it uses less digits than its factorization.

53936729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240.

The product of its digits is 306180, while the sum is 44.

The square root of 53936729 is about 7344.1629203062. The cubic root of 53936729 is about 377.8286341921.

The spelling of 53936729 in words is "fifty-three million, nine hundred thirty-six thousand, seven hundred twenty-nine".