53178720 has 384 divisors, whose sum is σ = 217728000. Its totient is φ = 10838016.

The previous prime is 53178709. The next prime is 53178743. The reversal of 53178720 is 2787135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2798871 + ... + 2798889.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^53178720 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 53178720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108864000).

53178720 is an abundant number, since it is smaller than the sum of its proper divisors (164549280).

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

53178720 is a wasteful number, since it uses less digits than its factorization.

53178720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 53178720 is about 7292.3740990160. The cubic root of 53178720 is about 376.0503176964.

The spelling of 53178720 in words is "fifty-three million, one hundred seventy-eight thousand, seven hundred twenty".