52445320 has 64 divisors (see below), whose sum is σ = 125308800. Its totient is φ = 19699200.

The previous prime is 52445303. The next prime is 52445321. The reversal of 52445320 is 2354425.

It is not an unprimeable number, because it can be changed into a prime (52445321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114532 + ... + 114988.

It is an arithmetic number, because the mean of its divisors is an integer number (1957950).

Almost surely, 2^52445320 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 52445320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62654400).

52445320 is an abundant number, since it is smaller than the sum of its proper divisors (72863480).

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

52445320 is a wasteful number, since it uses less digits than its factorization.

52445320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 52445320 is about 7241.9141116144. The cubic root of 52445320 is about 374.3135768881.

Adding to 52445320 its reverse (2354425), we get a palindrome (54799745).

The spelling of 52445320 in words is "fifty-two million, four hundred forty-five thousand, three hundred twenty".