53638 has 8 divisors (see below), whose sum is σ = 86688. Its totient is φ = 24744.

The previous prime is 53633. The next prime is 53639. The reversal of 53638 is 83635.

53638 is nontrivially palindromic in base 5.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53633) by changing a digit.

53638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006 + ... + 1057.

It is an arithmetic number, because the mean of its divisors is an integer number (10836).

2⁵³⁶³⁸ is an apocalyptic number.

53638 is a deficient number, since it is larger than the sum of its proper divisors (33050).

53638 is a wasteful number, since it uses less digits than its factorization.

53638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078.

The product of its digits is 2160, while the sum is 25.

The square root of 53638 is about 231.5987910158. The cubic root of 53638 is about 37.7129806820.

The spelling of 53638 in words is "fifty-three thousand, six hundred thirty-eight".