104171861 has 2 divisors, whose sum is σ = 104171862. Its totient is φ = 104171860.

The previous prime is 104171797. The next prime is 104171897. The reversal of 104171861 is 168171401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62504836 + 41667025 = 7906^2 + 6455^2 .

It is a cyclic number.

It is not a de Polignac number, because 104171861 - 2⁶ = 104171797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104171261) 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 as a sum of consecutive naturals, namely, 52085930 + 52085931.

It is an arithmetic number, because the mean of its divisors is an integer number (52085931).

Almost surely, 2^104171861 is an apocalyptic number.

It is an amenable number.

104171861 is a deficient number, since it is larger than the sum of its proper divisors (1).

104171861 is an equidigital number, since it uses as much as digits as its factorization.

104171861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 104171861 is about 10206.4617277488. The cubic root of 104171861 is about 470.5258351982.

The spelling of 104171861 in words is "one hundred four million, one hundred seventy-one thousand, eight hundred sixty-one".