53326440 has 96 divisors (see below), whose sum is σ = 174545280. Its totient is φ = 14119296.

The previous prime is 53326409. The next prime is 53326451. The reversal of 53326440 is 4462335.

53326440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 59677 + ... + 60563.

It is an arithmetic number, because the mean of its divisors is an integer number (1818180).

Almost surely, 2^53326440 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 53326440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87272640).

53326440 is an abundant number, since it is smaller than the sum of its proper divisors (121218840).

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

53326440 is a wasteful number, since it uses less digits than its factorization.

53326440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 53326440 is about 7302.4954638808. The cubic root of 53326440 is about 376.3981936661.

Adding to 53326440 its reverse (4462335), we get a palindrome (57788775).

The spelling of 53326440 in words is "fifty-three million, three hundred twenty-six thousand, four hundred forty".