53243644 has 12 divisors (see below), whose sum is σ = 93646000. Its totient is φ = 26487648.

The previous prime is 53243639. The next prime is 53243651. The reversal of 53243644 is 44634235.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32649 + ... + 34240.

Almost surely, 2^53243644 is an apocalyptic number.

It is an amenable number.

53243644 is a deficient number, since it is larger than the sum of its proper divisors (40402356).

53243644 is a wasteful number, since it uses less digits than its factorization.

53243644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67092 (or 67090 counting only the distinct ones).

The product of its digits is 34560, while the sum is 31.

The square root of 53243644 is about 7296.8242407228. The cubic root of 53243644 is about 376.2032909275.

Adding to 53243644 its reverse (44634235), we get a palindrome (97877879).

The spelling of 53243644 in words is "fifty-three million, two hundred forty-three thousand, six hundred forty-four".