84555 has 12 divisors (see below), whose sum is σ = 146640. Its totient is φ = 45072.

The previous prime is 84551. The next prime is 84559. The reversal of 84555 is 55548.

It is an interprime number because it is at equal distance from previous prime (84551) and next prime (84559).

It is not a de Polignac number, because 84555 - 2² = 84551 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 84555.

It is not an unprimeable number, because it can be changed into a prime (84551) 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, 895 + ... + 984.

It is an arithmetic number, because the mean of its divisors is an integer number (12220).

2⁸⁴⁵⁵⁵ is an apocalyptic number.

84555 is a deficient number, since it is larger than the sum of its proper divisors (62085).

84555 is a wasteful number, since it uses less digits than its factorization.

84555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890 (or 1887 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 84555 is about 290.7834245620. The cubic root of 84555 is about 43.8914334428.

It can be divided in two parts, 845 and 55, that added together give a square (900 = 30²).

The spelling of 84555 in words is "eighty-four thousand, five hundred fifty-five".