52405344 has 144 divisors (see below), whose sum is σ = 160458480. Its totient is φ = 16174080.

The previous prime is 52405337. The next prime is 52405387. The reversal of 52405344 is 44350425.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333714 + ... + 333870.

It is an arithmetic number, because the mean of its divisors is an integer number (1114295).

Almost surely, 2^52405344 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 52405344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80229240).

52405344 is an abundant number, since it is smaller than the sum of its proper divisors (108053136).

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

52405344 is a wasteful number, since it uses less digits than its factorization.

52405344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 52405344 is about 7239.1535416788. The cubic root of 52405344 is about 374.2184469311.

Adding to 52405344 its reverse (44350425), we get a palindrome (96755769).

The spelling of 52405344 in words is "fifty-two million, four hundred five thousand, three hundred forty-four".