53440320 has 56 divisors (see below), whose sum is σ = 169676064. Its totient is φ = 14250496.

The previous prime is 53440267. The next prime is 53440337. The reversal of 53440320 is 2304435.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26874 + ... + 28793.

Almost surely, 2^53440320 is an apocalyptic number.

It is an amenable number.

53440320 is an abundant number, since it is smaller than the sum of its proper divisors (116235744).

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

53440320 is a wasteful number, since it uses less digits than its factorization.

53440320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55687 (or 55677 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 53440320 is about 7310.2886399923. The cubic root of 53440320 is about 376.6659392090.

Adding to 53440320 its reverse (2304435), we get a palindrome (55744755).

The spelling of 53440320 in words is "fifty-three million, four hundred forty thousand, three hundred twenty".