201020959 has 4 divisors (see below), whose sum is σ = 201332304. Its totient is φ = 200709616.

The previous prime is 201020929. The next prime is 201020977. The reversal of 201020959 is 959020102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020929) 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 in 3 ways as a sum of consecutive naturals, for example, 154702 + ... + 155995.

It is an arithmetic number, because the mean of its divisors is an integer number (50333076).

Almost surely, 2^201020959 is an apocalyptic number.

201020959 is a deficient number, since it is larger than the sum of its proper divisors (311345).

201020959 is an equidigital number, since it uses as much as digits as its factorization.

201020959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311344.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 201020959 is about 14178.1860264281. The cubic root of 201020959 is about 585.7969599086.

The spelling of 201020959 in words is "two hundred one million, twenty thousand, nine hundred fifty-nine".