52404144 has 80 divisors (see below), whose sum is σ = 147094752. Its totient is φ = 15980544.

The previous prime is 52404133. The next prime is 52404151. The reversal of 52404144 is 44140425.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 85182 + ... + 85794.

Almost surely, 2^52404144 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 52404144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73547376).

52404144 is an abundant number, since it is smaller than the sum of its proper divisors (94690608).

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

52404144 is a wasteful number, since it uses less digits than its factorization.

52404144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 52404144 is about 7239.0706585859. The cubic root of 52404144 is about 374.2155905712.

Adding to 52404144 its reverse (44140425), we get a palindrome (96544569).

The spelling of 52404144 in words is "fifty-two million, four hundred four thousand, one hundred forty-four".