53043444 has 48 divisors (see below), whose sum is σ = 139283200. Its totient is φ = 17454528.

The previous prime is 53043439. The next prime is 53043457. The reversal of 53043444 is 44434035.

It is a super-2 number, since 2×53043444² = 5627213902762272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 5424 + ... + 11640.

Almost surely, 2^53043444 is an apocalyptic number.

53043444 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53043444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69641600).

53043444 is an abundant number, since it is smaller than the sum of its proper divisors (86239756).

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

53043444 is a wasteful number, since it uses less digits than its factorization.

53043444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6309 (or 6301 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 53043444 is about 7283.0930242583. The cubic root of 53043444 is about 375.7311814034.

Adding to 53043444 its reverse (44434035), we get a palindrome (97477479).

The spelling of 53043444 in words is "fifty-three million, forty-three thousand, four hundred forty-four".