404504251171 has 2 divisors, whose sum is σ = 404504251172. Its totient is φ = 404504251170.

The previous prime is 404504251097. The next prime is 404504251201. The reversal of 404504251171 is 171152405404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404504251171 - 2¹⁷ = 404504120099 is a prime.

It is a super-2 number, since 2×404504251171² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (404504251771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202252125585 + 202252125586.

It is an arithmetic number, because the mean of its divisors is an integer number (202252125586).

Almost surely, 2^404504251171 is an apocalyptic number.

404504251171 is a deficient number, since it is larger than the sum of its proper divisors (1).

404504251171 is an equidigital number, since it uses as much as digits as its factorization.

404504251171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 34.

Adding to 404504251171 its reverse (171152405404), we get a palindrome (575656656575).

The spelling of 404504251171 in words is "four hundred four billion, five hundred four million, two hundred fifty-one thousand, one hundred seventy-one".