84255556 has 48 divisors (see below), whose sum is σ = 190189440. Its totient is φ = 31691520.

The previous prime is 84255547. The next prime is 84255559. The reversal of 84255556 is 65555248.

84255556 = 1199² + 1200² + ... + 1254².

It is not an unprimeable number, because it can be changed into a prime (84255559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4216 + ... + 13648.

It is an arithmetic number, because the mean of its divisors is an integer number (3962280).

Almost surely, 2^84255556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84255556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95094720).

84255556 is an abundant number, since it is smaller than the sum of its proper divisors (105933884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84255556 is a wasteful number, since it uses less digits than its factorization.

84255556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484 (or 9482 counting only the distinct ones).

The product of its digits is 240000, while the sum is 40.

The square root of 84255556 is about 9179.0825249586. The cubic root of 84255556 is about 438.3955962515.

Subtracting from 84255556 its product of digits (240000), we obtain a square (84015556 = 9166²).

The spelling of 84255556 in words is "eighty-four million, two hundred fifty-five thousand, five hundred fifty-six".