53644 has 6 divisors (see below), whose sum is σ = 93884. Its totient is φ = 26820.

The previous prime is 53639. The next prime is 53653. The reversal of 53644 is 44635.

It is a plaindrome in base 14.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 6702 + ... + 6709.

2⁵³⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

53644 is a deficient number, since it is larger than the sum of its proper divisors (40240).

53644 is a wasteful number, since it uses less digits than its factorization.

53644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13415 (or 13413 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 53644 is about 231.6117440891. The cubic root of 53644 is about 37.7143868334.

Subtracting from 53644 its reverse (44635), we obtain a palindrome (9009).

The spelling of 53644 in words is "fifty-three thousand, six hundred forty-four".