53380640 has 96 divisors (see below), whose sum is σ = 132378624. Its totient is φ = 20321280.

The previous prime is 53380627. The next prime is 53380661. The reversal of 53380640 is 4608335.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420257 + ... + 420383.

It is an arithmetic number, because the mean of its divisors is an integer number (1378944).

Almost surely, 2^53380640 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 53380640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66189312).

53380640 is an abundant number, since it is smaller than the sum of its proper divisors (78997984).

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

53380640 is a wasteful number, since it uses less digits than its factorization.

53380640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 53380640 is about 7306.2055815587. The cubic root of 53380640 is about 376.5256718573.

Adding to 53380640 its reverse (4608335), we get a palindrome (57988975).

The spelling of 53380640 in words is "fifty-three million, three hundred eighty thousand, six hundred forty".