53633636 has 18 divisors (see below), whose sum is σ = 109183158. Its totient is φ = 22985760.

The previous prime is 53633621. The next prime is 53633639. The reversal of 53633636 is 63633635.

It can be written as a sum of positive squares in only one way, i.e., 46104100 + 7529536 = 6790^2 + 2744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53633596 and 53633605.

It is not an unprimeable number, because it can be changed into a prime (53633639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136625 + ... + 137016.

It is an arithmetic number, because the mean of its divisors is an integer number (6065731).

Almost surely, 2^53633636 is an apocalyptic number.

It is an amenable number.

53633636 is an abundant number, since it is smaller than the sum of its proper divisors (55549522).

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

53633636 is a wasteful number, since it uses less digits than its factorization.

53633636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273659 (or 273650 counting only the distinct ones).

The product of its digits is 87480, while the sum is 35.

The square root of 53633636 is about 7323.4988905577. The cubic root of 53633636 is about 377.1195787536.

Subtracting 53633636 from its reverse (63633635), we obtain a palindrome (9999999).

The spelling of 53633636 in words is "fifty-three million, six hundred thirty-three thousand, six hundred thirty-six".