478822171 has 2 divisors, whose sum is σ = 478822172. Its totient is φ = 478822170.

The previous prime is 478822147. The next prime is 478822213. The reversal of 478822171 is 171228874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478822171 - 2¹⁵ = 478789403 is a prime.

It is not a weakly prime, because it can be changed into another prime (478822571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239411085 + 239411086.

It is an arithmetic number, because the mean of its divisors is an integer number (239411086).

Almost surely, 2^478822171 is an apocalyptic number.

478822171 is a deficient number, since it is larger than the sum of its proper divisors (1).

478822171 is an equidigital number, since it uses as much as digits as its factorization.

478822171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50176, while the sum is 40.

The square root of 478822171 is about 21882.0056439075. The cubic root of 478822171 is about 782.3325808266.

It can be divided in two parts, 478 and 822171, that added together give a square (822649 = 907²).

The spelling of 478822171 in words is "four hundred seventy-eight million, eight hundred twenty-two thousand, one hundred seventy-one".