16063561 has 2 divisors, whose sum is σ = 16063562. Its totient is φ = 16063560.

The previous prime is 16063559. The next prime is 16063573. The reversal of 16063561 is 16536061.

16063561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 3240000 = 3581^2 + 1800^2 .

It is a cyclic number.

It is not a de Polignac number, because 16063561 - 2¹ = 16063559 is a prime.

Together with 16063559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16063501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8031780 + 8031781.

It is an arithmetic number, because the mean of its divisors is an integer number (8031781).

Almost surely, 2^16063561 is an apocalyptic number.

It is an amenable number.

16063561 is a deficient number, since it is larger than the sum of its proper divisors (1).

16063561 is an equidigital number, since it uses as much as digits as its factorization.

16063561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 16063561 is about 4007.9372500078. The cubic root of 16063561 is about 252.3174434452.

The spelling of 16063561 in words is "sixteen million, sixty-three thousand, five hundred sixty-one".