53744643 has 6 divisors (see below), whose sum is σ = 77631164. Its totient is φ = 35829756.

The previous prime is 53744623. The next prime is 53744659. The reversal of 53744643 is 34644735.

It is a happy number.

53744643 is a `hidden beast` number, since 5 + 3 + 7 + 4 + 4 + 643 = 666.

It is not a de Polignac number, because 53744643 - 2¹⁰ = 53743619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53744598 and 53744607.

It is not an unprimeable number, because it can be changed into a prime (53744623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2985805 + ... + 2985822.

Almost surely, 2^53744643 is an apocalyptic number.

53744643 is a deficient number, since it is larger than the sum of its proper divisors (23886521).

53744643 is a wasteful number, since it uses less digits than its factorization.

53744643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971633 (or 5971630 counting only the distinct ones).

The product of its digits is 120960, while the sum is 36.

The square root of 53744643 is about 7331.0737958365. The cubic root of 53744643 is about 377.3795776881.

The spelling of 53744643 in words is "fifty-three million, seven hundred forty-four thousand, six hundred forty-three".