201205457 has 2 divisors, whose sum is σ = 201205458. Its totient is φ = 201205456.

The previous prime is 201205373. The next prime is 201205463. The reversal of 201205457 is 754502102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199120321 + 2085136 = 14111^2 + 1444^2 .

It is a cyclic number.

It is not a de Polignac number, because 201205457 - 2¹² = 201201361 is a prime.

It is not a weakly prime, because it can be changed into another prime (201205957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100602728 + 100602729.

It is an arithmetic number, because the mean of its divisors is an integer number (100602729).

Almost surely, 2^201205457 is an apocalyptic number.

It is an amenable number.

201205457 is a deficient number, since it is larger than the sum of its proper divisors (1).

201205457 is an equidigital number, since it uses as much as digits as its factorization.

201205457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 201205457 is about 14184.6909377681. The cubic root of 201205457 is about 585.9761208610.

Adding to 201205457 its reverse (754502102), we get a palindrome (955707559).

The spelling of 201205457 in words is "two hundred one million, two hundred five thousand, four hundred fifty-seven".