201172249 has 2 divisors, whose sum is σ = 201172250. Its totient is φ = 201172248.

The previous prime is 201172211. The next prime is 201172261. The reversal of 201172249 is 942271102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176491225 + 24681024 = 13285^2 + 4968^2 .

It is a cyclic number.

It is not a de Polignac number, because 201172249 - 2¹¹ = 201170201 is a prime.

It is not a weakly prime, because it can be changed into another prime (201122249) 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, 100586124 + 100586125.

It is an arithmetic number, because the mean of its divisors is an integer number (100586125).

Almost surely, 2^201172249 is an apocalyptic number.

It is an amenable number.

201172249 is a deficient number, since it is larger than the sum of its proper divisors (1).

201172249 is an equidigital number, since it uses as much as digits as its factorization.

201172249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 201172249 is about 14183.5203317089. The cubic root of 201172249 is about 585.9438815670.

It can be divided in two parts, 20117 and 2249, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 201172249 in words is "two hundred one million, one hundred seventy-two thousand, two hundred forty-nine".