53436729 has 8 divisors (see below), whose sum is σ = 75440160. Its totient is φ = 33528896.

The previous prime is 53436703. The next prime is 53436739. The reversal of 53436729 is 92763435.

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

It is not a de Polignac number, because 53436729 - 2¹³ = 53428537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53436739) 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, 523839 + ... + 523940.

It is an arithmetic number, because the mean of its divisors is an integer number (9430020).

Almost surely, 2^53436729 is an apocalyptic number.

It is an amenable number.

53436729 is a deficient number, since it is larger than the sum of its proper divisors (22003431).

53436729 is a wasteful number, since it uses less digits than its factorization.

53436729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047799.

The product of its digits is 136080, while the sum is 39.

The square root of 53436729 is about 7310.0430231292. The cubic root of 53436729 is about 376.6575021482.

The spelling of 53436729 in words is "fifty-three million, four hundred thirty-six thousand, seven hundred twenty-nine".