54635643 has 12 divisors (see below), whose sum is σ = 81051568. Its totient is φ = 35439120.

The previous prime is 54635627. The next prime is 54635653. The reversal of 54635643 is 34653645.

54635643 is a `hidden beast` number, since 5 + 4 + 6 + 3 + 5 + 643 = 666.

It is not a de Polignac number, because 54635643 - 2⁴ = 54635627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54635598 and 54635607.

It is not an unprimeable number, because it can be changed into a prime (54635653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81703 + ... + 82368.

Almost surely, 2^54635643 is an apocalyptic number.

54635643 is a deficient number, since it is larger than the sum of its proper divisors (26415925).

54635643 is a wasteful number, since it uses less digits than its factorization.

54635643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164114 (or 164111 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 54635643 is about 7391.5927241698. The cubic root of 54635643 is about 379.4536076229.

It can be divided in two parts, 54635 and 643, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 54635643 in words is "fifty-four million, six hundred thirty-five thousand, six hundred forty-three".