201601513 has 2 divisors, whose sum is σ = 201601514. Its totient is φ = 201601512.

The previous prime is 201601511. The next prime is 201601549. The reversal of 201601513 is 315106102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147549609 + 54051904 = 12147^2 + 7352^2 .

It is a cyclic number.

It is not a de Polignac number, because 201601513 - 2¹ = 201601511 is a prime.

Together with 201601511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201601511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100800756 + 100800757.

It is an arithmetic number, because the mean of its divisors is an integer number (100800757).

Almost surely, 2^201601513 is an apocalyptic number.

It is an amenable number.

201601513 is a deficient number, since it is larger than the sum of its proper divisors (1).

201601513 is an equidigital number, since it uses as much as digits as its factorization.

201601513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 201601513 is about 14198.6447592719. The cubic root of 201601513 is about 586.3603504143.

Adding to 201601513 its reverse (315106102), we get a palindrome (516707615).

The spelling of 201601513 in words is "two hundred one million, six hundred one thousand, five hundred thirteen".