385543 has 4 divisors (see below), whose sum is σ = 408240. Its totient is φ = 362848.

The previous prime is 385537. The next prime is 385559. The reversal of 385543 is 345583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345583 = 7 ⋅49369.

It is a de Polignac number, because none of the positive numbers 2^k-385543 is a prime.

It is a Duffinian number.

385543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11323 + ... + 11356.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2³⁸⁵⁵⁴³ is an apocalyptic number.

385543 is a deficient number, since it is larger than the sum of its proper divisors (22697).

385543 is a wasteful number, since it uses less digits than its factorization.

385543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22696.

The product of its digits is 7200, while the sum is 28.

The square root of 385543 is about 620.9210899945. The cubic root of 385543 is about 72.7820483652.

The spelling of 385543 in words is "three hundred eighty-five thousand, five hundred forty-three".