200155171 has 2 divisors, whose sum is σ = 200155172. Its totient is φ = 200155170.

The previous prime is 200155121. The next prime is 200155183. The reversal of 200155171 is 171551002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200155171 - 2¹³ = 200146979 is a prime.

It is not a weakly prime, because it can be changed into another prime (200155121) 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, 100077585 + 100077586.

It is an arithmetic number, because the mean of its divisors is an integer number (100077586).

Almost surely, 2^200155171 is an apocalyptic number.

200155171 is a deficient number, since it is larger than the sum of its proper divisors (1).

200155171 is an equidigital number, since it uses as much as digits as its factorization.

200155171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 200155171 is about 14147.6206833517. The cubic root of 200155171 is about 584.9547494646.

The spelling of 200155171 in words is "two hundred million, one hundred fifty-five thousand, one hundred seventy-one".