84545 has 8 divisors (see below), whose sum is σ = 104424. Its totient is φ = 65664.

The previous prime is 84533. The next prime is 84551. The reversal of 84545 is 54548.

84545 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 4 ways, for example, as 39601 + 44944 = 199^2 + 212^2 .

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 84545 - 2⁶ = 84481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44 + ... + 413.

It is an arithmetic number, because the mean of its divisors is an integer number (13053).

2⁸⁴⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

84545 is a deficient number, since it is larger than the sum of its proper divisors (19879).

84545 is a wasteful number, since it uses less digits than its factorization.

84545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499.

The product of its digits is 3200, while the sum is 26.

The square root of 84545 is about 290.7662291257. The cubic root of 84545 is about 43.8897030833.

It can be divided in two parts, 845 and 45, that multiplied together give a square (38025 = 195²).

The spelling of 84545 in words is "eighty-four thousand, five hundred forty-five".