53857643 has 8 divisors (see below), whose sum is σ = 61632480. Its totient is φ = 46103040.

The previous prime is 53857631. The next prime is 53857673. The reversal of 53857643 is 34675835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53857643 - 2⁴ = 53857627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53857643.

It is not an unprimeable number, because it can be changed into a prime (53857613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1163 + ... + 10443.

It is an arithmetic number, because the mean of its divisors is an integer number (7704060).

Almost surely, 2^53857643 is an apocalyptic number.

53857643 is a deficient number, since it is larger than the sum of its proper divisors (7774837).

53857643 is an equidigital number, since it uses as much as digits as its factorization.

53857643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10117.

The product of its digits is 302400, while the sum is 41.

The square root of 53857643 is about 7338.7766691731. The cubic root of 53857643 is about 377.6438771482.

The spelling of 53857643 in words is "fifty-three million, eight hundred fifty-seven thousand, six hundred forty-three".