53622636 has 48 divisors (see below), whose sum is σ = 132370560. Its totient is φ = 16848000.

The previous prime is 53622631. The next prime is 53622643. The reversal of 53622636 is 63622635.

It is a junction number, because it is equal to n+sod(n) for n = 53622597 and 53622606.

It is not an unprimeable number, because it can be changed into a prime (53622631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56760 + ... + 57696.

It is an arithmetic number, because the mean of its divisors is an integer number (2757720).

Almost surely, 2^53622636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53622636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66185280).

53622636 is an abundant number, since it is smaller than the sum of its proper divisors (78747924).

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

53622636 is a wasteful number, since it uses less digits than its factorization.

53622636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1212 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

The square root of 53622636 is about 7322.7478449008. The cubic root of 53622636 is about 377.0937951888.

Subtracting 53622636 from its reverse (63622635), we obtain a palindrome (9999999).

The spelling of 53622636 in words is "fifty-three million, six hundred twenty-two thousand, six hundred thirty-six".