52318644 has 48 divisors (see below), whose sum is σ = 140894208. Its totient is φ = 14800608.

The previous prime is 52318621. The next prime is 52318667. The reversal of 52318644 is 44681325.

52318644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52318621) and next prime (52318667).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5629 + ... + 11675.

It is an arithmetic number, because the mean of its divisors is an integer number (2935296).

Almost surely, 2^52318644 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 52318644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70447104).

52318644 is an abundant number, since it is smaller than the sum of its proper divisors (88575564).

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

52318644 is a wasteful number, since it uses less digits than its factorization.

52318644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164 (or 6162 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 52318644 is about 7233.1627936885. The cubic root of 52318644 is about 374.0119625941.

Adding to 52318644 its reverse (44681325), we get a palindrome (96999969).

The spelling of 52318644 in words is "fifty-two million, three hundred eighteen thousand, six hundred forty-four".