52965440 has 112 divisors (see below), whose sum is σ = 141329664. Its totient is φ = 18739200.

The previous prime is 52965439. The next prime is 52965461. The reversal of 52965440 is 4456925.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 52965440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144137 + ... + 144503.

It is an arithmetic number, because the mean of its divisors is an integer number (1261872).

Almost surely, 2^52965440 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 52965440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70664832).

52965440 is an abundant number, since it is smaller than the sum of its proper divisors (88364224).

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

52965440 is a wasteful number, since it uses less digits than its factorization.

52965440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 52965440 is about 7277.7359116692. The cubic root of 52965440 is about 375.5469116090.

The spelling of 52965440 in words is "fifty-two million, nine hundred sixty-five thousand, four hundred forty".