84522155 has 4 divisors (see below), whose sum is σ = 101426592. Its totient is φ = 67617720.

The previous prime is 84522131. The next prime is 84522157. The reversal of 84522155 is 55122548.

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

It is not a de Polignac number, because 84522155 - 2²⁴ = 67744939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84522157) 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 3 ways as a sum of consecutive naturals, for example, 8452211 + ... + 8452220.

It is an arithmetic number, because the mean of its divisors is an integer number (25356648).

Almost surely, 2^84522155 is an apocalyptic number.

84522155 is a deficient number, since it is larger than the sum of its proper divisors (16904437).

84522155 is a wasteful number, since it uses less digits than its factorization.

84522155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16904436.

The product of its digits is 16000, while the sum is 32.

The square root of 84522155 is about 9193.5931495798. The cubic root of 84522155 is about 438.8574956508.

The spelling of 84522155 in words is "eighty-four million, five hundred twenty-two thousand, one hundred fifty-five".