53121344 has 28 divisors (see below), whose sum is σ = 108266484. Its totient is φ = 25841664.

The previous prime is 53121337. The next prime is 53121353. The reversal of 53121344 is 44312135.

It can be written as a sum of positive squares in 2 ways, for example, as 47886400 + 5234944 = 6920^2 + 2288^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8849 + ... + 13584.

Almost surely, 2^53121344 is an apocalyptic number.

It is an amenable number.

53121344 is an abundant number, since it is smaller than the sum of its proper divisors (55145140).

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

53121344 is a wasteful number, since it uses less digits than its factorization.

53121344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22482 (or 22472 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 53121344 is about 7288.4390647106. The cubic root of 53121344 is about 375.9150253123.

Adding to 53121344 its reverse (44312135), we get a palindrome (97433479).

The spelling of 53121344 in words is "fifty-three million, one hundred twenty-one thousand, three hundred forty-four".