84555549 has 16 divisors (see below), whose sum is σ = 134904000. Its totient is φ = 52033968.

The previous prime is 84555547. The next prime is 84555553. The reversal of 84555549 is 94555548.

It is not a de Polignac number, because 84555549 - 2¹ = 84555547 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84555547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120099 + ... + 120800.

It is an arithmetic number, because the mean of its divisors is an integer number (8431500).

Almost surely, 2^84555549 is an apocalyptic number.

It is an amenable number.

84555549 is a deficient number, since it is larger than the sum of its proper divisors (50348451).

84555549 is a wasteful number, since it uses less digits than its factorization.

84555549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240921 (or 240915 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 84555549 is about 9195.4091262978. The cubic root of 84555549 is about 438.9152843555.

Subtracting 84555549 from its reverse (94555548), we obtain a palindrome (9999999).

The spelling of 84555549 in words is "eighty-four million, five hundred fifty-five thousand, five hundred forty-nine".