53218080 has 192 divisors, whose sum is σ = 189665280. Its totient is φ = 13934592.

The previous prime is 53218079. The next prime is 53218091. The reversal of 53218080 is 8081235.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 418977 + ... + 419103.

It is an arithmetic number, because the mean of its divisors is an integer number (987840).

Almost surely, 2^53218080 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 53218080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94832640).

53218080 is an abundant number, since it is smaller than the sum of its proper divisors (136447200).

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

53218080 is a wasteful number, since it uses less digits than its factorization.

53218080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 53218080 is about 7295.0723094429. The cubic root of 53218080 is about 376.1430721558.

The spelling of 53218080 in words is "fifty-three million, two hundred eighteen thousand, eighty".