53421344 has 48 divisors (see below), whose sum is σ = 112075488. Its totient is φ = 24978432.

The previous prime is 53421343. The next prime is 53421353. The reversal of 53421344 is 44312435.

It is not an unprimeable number, because it can be changed into a prime (53421343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153779 + ... + 154125.

It is an arithmetic number, because the mean of its divisors is an integer number (2334906).

Almost surely, 2^53421344 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 53421344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56037744).

53421344 is an abundant number, since it is smaller than the sum of its proper divisors (58654144).

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

53421344 is a wasteful number, since it uses less digits than its factorization.

53421344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 649 counting only the distinct ones).

The product of its digits is 5760, while the sum is 26.

The square root of 53421344 is about 7308.9906279869. The cubic root of 53421344 is about 376.6213507844.

Adding to 53421344 its reverse (44312435), we get a palindrome (97733779).

The spelling of 53421344 in words is "fifty-three million, four hundred twenty-one thousand, three hundred forty-four".