53657280 has 168 divisors, whose sum is σ = 190829184. Its totient is φ = 13824000.

The previous prime is 53657257. The next prime is 53657293. The reversal of 53657280 is 8275635.

53657280 is a `hidden beast` number, since 5 + 3 + 6 + 572 + 80 = 666.

53657280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88980 + ... + 89580.

It is an arithmetic number, because the mean of its divisors is an integer number (1135888).

Almost surely, 2^53657280 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 53657280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95414592).

53657280 is an abundant number, since it is smaller than the sum of its proper divisors (137171904).

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

53657280 is a wasteful number, since it uses less digits than its factorization.

53657280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 53657280 is about 7325.1129684122. The cubic root of 53657280 is about 377.1749874240.

The spelling of 53657280 in words is "fifty-three million, six hundred fifty-seven thousand, two hundred eighty".