52053440 has 56 divisors (see below), whose sum is σ = 126626112. Its totient is φ = 20372480.

The previous prime is 52053431. The next prime is 52053461. The reversal of 52053440 is 4435025.

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, 13310 + ... + 16770.

Almost surely, 2^52053440 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 52053440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63313056).

52053440 is an abundant number, since it is smaller than the sum of its proper divisors (74572672).

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

52053440 is a wasteful number, since it uses less digits than its factorization.

52053440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3515 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 52053440 is about 7214.8069967256. The cubic root of 52053440 is about 373.3789343391.

Adding to 52053440 its reverse (4435025), we get a palindrome (56488465).

The spelling of 52053440 in words is "fifty-two million, fifty-three thousand, four hundred forty".