84855543 has 4 divisors (see below), whose sum is σ = 113140728. Its totient is φ = 56570360.

The previous prime is 84855493. The next prime is 84855557. The reversal of 84855543 is 34555848.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84855543 - 2¹⁰ = 84854519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84855495 and 84855504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84855593) 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, 14142588 + ... + 14142593.

It is an arithmetic number, because the mean of its divisors is an integer number (28285182).

Almost surely, 2^84855543 is an apocalyptic number.

84855543 is a deficient number, since it is larger than the sum of its proper divisors (28285185).

84855543 is a wasteful number, since it uses less digits than its factorization.

84855543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28285184.

The product of its digits is 384000, while the sum is 42.

The square root of 84855543 is about 9211.7068450966. The cubic root of 84855543 is about 439.4337464406.

It can be divided in two parts, 8485 and 5543, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 84855543 in words is "eighty-four million, eight hundred fifty-five thousand, five hundred forty-three".