52448440 has 64 divisors (see below), whose sum is σ = 129600000. Its totient is φ = 18944640.

The previous prime is 52448437. The next prime is 52448467. The reversal of 52448440 is 4484425.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87261 + ... + 87859.

It is an arithmetic number, because the mean of its divisors is an integer number (2025000).

Almost surely, 2^52448440 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 52448440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64800000).

52448440 is an abundant number, since it is smaller than the sum of its proper divisors (77151560).

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

52448440 is a wasteful number, since it uses less digits than its factorization.

52448440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 52448440 is about 7242.1295210732. The cubic root of 52448440 is about 374.3209994455.

The spelling of 52448440 in words is "fifty-two million, four hundred forty-eight thousand, four hundred forty".