201530205 has 24 divisors (see below), whose sum is σ = 350027808. Its totient is φ = 107264736.

The previous prime is 201530183. The next prime is 201530213. The reversal of 201530205 is 502035102.

It is a happy number.

It is not a de Polignac number, because 201530205 - 2⁶ = 201530141 is a prime.

It is a super-2 number, since 2×201530205² = 81228847054684050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 19254 + ... + 27816.

It is an arithmetic number, because the mean of its divisors is an integer number (14584492).

Almost surely, 2^201530205 is an apocalyptic number.

It is an amenable number.

201530205 is a deficient number, since it is larger than the sum of its proper divisors (148497603).

201530205 is a wasteful number, since it uses less digits than its factorization.

201530205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9097 (or 9094 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 201530205 is about 14196.1334524581. The cubic root of 201530205 is about 586.2912088787.

Adding to 201530205 its reverse (502035102), we get a palindrome (703565307).

The spelling of 201530205 in words is "two hundred one million, five hundred thirty thousand, two hundred five".