53643044 has 72 divisors (see below), whose sum is σ = 120992760. Its totient is φ = 20611584.

The previous prime is 53643043. The next prime is 53643067. The reversal of 53643044 is 44034635.

It can be written as a sum of positive squares in 4 ways, for example, as 3062500 + 50580544 = 1750^2 + 7112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53642998 and 53643016.

It is not an unprimeable number, because it can be changed into a prime (53643043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93992 + ... + 94560.

It is an arithmetic number, because the mean of its divisors is an integer number (1680455).

Almost surely, 2^53643044 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 53643044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60496380).

53643044 is an abundant number, since it is smaller than the sum of its proper divisors (67349716).

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

53643044 is a wasteful number, since it uses less digits than its factorization.

53643044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 53643044 is about 7324.1411783225. The cubic root of 53643044 is about 377.1416279367.

Adding to 53643044 its reverse (44034635), we get a palindrome (97677679).

The spelling of 53643044 in words is "fifty-three million, six hundred forty-three thousand, forty-four".