201205481 has 2 divisors, whose sum is σ = 201205482. Its totient is φ = 201205480.

The previous prime is 201205463. The next prime is 201205483. The reversal of 201205481 is 184502102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188815081 + 12390400 = 13741^2 + 3520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201205481 is a prime.

It is a super-2 number, since 2×201205481² = 80967291168882722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 201205483, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (201205483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100602740 + 100602741.

It is an arithmetic number, because the mean of its divisors is an integer number (100602741).

Almost surely, 2^201205481 is an apocalyptic number.

It is an amenable number.

201205481 is a deficient number, since it is larger than the sum of its proper divisors (1).

201205481 is an equidigital number, since it uses as much as digits as its factorization.

201205481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 201205481 is about 14184.6917837505. The cubic root of 201205481 is about 585.9761441596.

Adding to 201205481 its reverse (184502102), we get a palindrome (385707583).

The spelling of 201205481 in words is "two hundred one million, two hundred five thousand, four hundred eighty-one".