52405386 has 48 divisors (see below), whose sum is σ = 116704800. Its totient is φ = 15557760.

The previous prime is 52405337. The next prime is 52405387. The reversal of 52405386 is 68350425.

52405386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (52405387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351640 + ... + 351788.

It is an arithmetic number, because the mean of its divisors is an integer number (2431350).

Almost surely, 2^52405386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52405386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58352400).

52405386 is an abundant number, since it is smaller than the sum of its proper divisors (64299414).

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

52405386 is a wasteful number, since it uses less digits than its factorization.

52405386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 52405386 is about 7239.1564425698. The cubic root of 52405386 is about 374.2185469029.

The spelling of 52405386 in words is "fifty-two million, four hundred five thousand, three hundred eighty-six".