201741409 has 2 divisors, whose sum is σ = 201741410. Its totient is φ = 201741408.

The previous prime is 201741383. The next prime is 201741433. The reversal of 201741409 is 904147102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170694225 + 31047184 = 13065^2 + 5572^2 .

It is a cyclic number.

It is not a de Polignac number, because 201741409 - 2¹⁷ = 201610337 is a prime.

It is a super-2 number, since 2×201741409² = 81399192210610562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201741439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100870704 + 100870705.

It is an arithmetic number, because the mean of its divisors is an integer number (100870705).

Almost surely, 2^201741409 is an apocalyptic number.

It is an amenable number.

201741409 is a deficient number, since it is larger than the sum of its proper divisors (1).

201741409 is an equidigital number, since it uses as much as digits as its factorization.

201741409 is an evil number, because the sum of its binary digits is even.

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

The square root of 201741409 is about 14203.5702905995. The cubic root of 201741409 is about 586.4959487698.

The spelling of 201741409 in words is "two hundred one million, seven hundred forty-one thousand, four hundred nine".