53143644 has 24 divisors (see below), whose sum is σ = 124406800. Its totient is φ = 17656704.

The previous prime is 53143637. The next prime is 53143679. The reversal of 53143644 is 44634135.

53143644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 3319 + ... + 10830.

Almost surely, 2^53143644 is an apocalyptic number.

It is an amenable number.

53143644 is an abundant number, since it is smaller than the sum of its proper divisors (71263156).

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

53143644 is a wasteful number, since it uses less digits than its factorization.

53143644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14469 (or 14467 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 53143644 is about 7289.9687242127. The cubic root of 53143644 is about 375.9676201934.

Adding to 53143644 its reverse (44634135), we get a palindrome (97777779).

The spelling of 53143644 in words is "fifty-three million, one hundred forty-three thousand, six hundred forty-four".