53218452 has 48 divisors (see below), whose sum is σ = 143316992. Its totient is φ = 15055200.

The previous prime is 53218439. The next prime is 53218453. The reversal of 53218452 is 25481235.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53218453) 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, 5577 + ... + 11727.

Almost surely, 2^53218452 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 53218452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71658496).

53218452 is an abundant number, since it is smaller than the sum of its proper divisors (90098540).

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

53218452 is a wasteful number, since it uses less digits than its factorization.

53218452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268 (or 6266 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 53218452 is about 7295.0978060613. The cubic root of 53218452 is about 376.1439485804.

Adding to 53218452 its reverse (25481235), we get a palindrome (78699687).

The spelling of 53218452 in words is "fifty-three million, two hundred eighteen thousand, four hundred fifty-two".