201053609 has 2 divisors, whose sum is σ = 201053610. Its totient is φ = 201053608.

The previous prime is 201053563. The next prime is 201053623. The reversal of 201053609 is 906350102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180983209 + 20070400 = 13453^2 + 4480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201053609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (201053689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100526804 + 100526805.

It is an arithmetic number, because the mean of its divisors is an integer number (100526805).

Almost surely, 2^201053609 is an apocalyptic number.

It is an amenable number.

201053609 is a deficient number, since it is larger than the sum of its proper divisors (1).

201053609 is an equidigital number, since it uses as much as digits as its factorization.

201053609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 201053609 is about 14179.3373963666. The cubic root of 201053609 is about 585.8286734099.

The spelling of 201053609 in words is "two hundred one million, fifty-three thousand, six hundred nine".