52361440 has 48 divisors (see below), whose sum is σ = 125426448. Its totient is φ = 20653056.

The previous prime is 52361429. The next prime is 52361453. The reversal of 52361440 is 4416325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9439 + ... + 13921.

It is an arithmetic number, because the mean of its divisors is an integer number (2613051).

Almost surely, 2^52361440 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 52361440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62713224).

52361440 is an abundant number, since it is smaller than the sum of its proper divisors (73065008).

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

52361440 is a wasteful number, since it uses less digits than its factorization.

52361440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571 (or 4563 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 52361440 is about 7236.1205075648. The cubic root of 52361440 is about 374.1139138452.

Adding to 52361440 its reverse (4416325), we get a palindrome (56777765).

The spelling of 52361440 in words is "fifty-two million, three hundred sixty-one thousand, four hundred forty".