53636 has 24 divisors (see below), whose sum is σ = 108864. Its totient is φ = 22880.

The previous prime is 53633. The next prime is 53639. The reversal of 53636 is 63635.

It is an interprime number because it is at equal distance from previous prime (53633) and next prime (53639).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (53633) 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, 986 + ... + 1038.

It is an arithmetic number, because the mean of its divisors is an integer number (4536).

2⁵³⁶³⁶ is an apocalyptic number.

It is an amenable number.

53636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54432).

53636 is a wasteful number, since it uses less digits than its factorization.

53636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 89 counting only the distinct ones).

The product of its digits is 1620, while the sum is 23.

The square root of 53636 is about 231.5944731638. The cubic root of 53636 is about 37.7125119416.

53636 divided by its sum of digits (23) gives a palindrome (2332).

Subtracting 53636 from its reverse (63635), we obtain a palindrome (9999).

The spelling of 53636 in words is "fifty-three thousand, six hundred thirty-six".