53333440 has 28 divisors (see below), whose sum is σ = 127001016. Its totient is φ = 21333248.

The previous prime is 53333431. The next prime is 53333443. The reversal of 53333440 is 4433335.

53333440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53333443) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 83014 + ... + 83653.

Almost surely, 2^53333440 is an apocalyptic number.

It is an amenable number.

53333440 is an abundant number, since it is smaller than the sum of its proper divisors (73667576).

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

53333440 is a wasteful number, since it uses less digits than its factorization.

53333440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166684 (or 166674 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 25.

The square root of 53333440 is about 7302.9747363660. The cubic root of 53333440 is about 376.4146624952.

Adding to 53333440 its reverse (4433335), we get a palindrome (57766775).

The spelling of 53333440 in words is "fifty-three million, three hundred thirty-three thousand, four hundred forty".