53243630 has 48 divisors (see below), whose sum is σ = 106868160. Its totient is φ = 19081920.

The previous prime is 53243581. The next prime is 53243633. The reversal of 53243630 is 3634235.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53243630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53243633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95312 + ... + 95868.

It is an arithmetic number, because the mean of its divisors is an integer number (2226420).

Almost surely, 2^53243630 is an apocalyptic number.

53243630 is an abundant number, since it is smaller than the sum of its proper divisors (53624530).

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

53243630 is a wasteful number, since it uses less digits than its factorization.

53243630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 53243630 is about 7296.8232814013. The cubic root of 53243630 is about 376.2032579543.

Adding to 53243630 its reverse (3634235), we get a palindrome (56877865).

The spelling of 53243630 in words is "fifty-three million, two hundred forty-three thousand, six hundred thirty".