997471171 has 2 divisors, whose sum is σ = 997471172. Its totient is φ = 997471170.

The previous prime is 997471109. The next prime is 997471187. The reversal of 997471171 is 171174799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997471171 - 2⁹ = 997470659 is a prime.

It is a super-2 number, since 2×997471171² = 1989897473952222482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (997471771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498735585 + 498735586.

It is an arithmetic number, because the mean of its divisors is an integer number (498735586).

Almost surely, 2^997471171 is an apocalyptic number.

997471171 is a deficient number, since it is larger than the sum of its proper divisors (1).

997471171 is an equidigital number, since it uses as much as digits as its factorization.

997471171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 46.

The square root of 997471171 is about 31582.7669940428. The cubic root of 997471171 is about 999.1563454472.

The spelling of 997471171 in words is "nine hundred ninety-seven million, four hundred seventy-one thousand, one hundred seventy-one".