16061281 has 2 divisors, whose sum is σ = 16061282. Its totient is φ = 16061280.

The previous prime is 16061261. The next prime is 16061303. The reversal of 16061281 is 18216061.

16061281 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., 9891025 + 6170256 = 3145^2 + 2484^2 .

It is a cyclic number.

It is not a de Polignac number, because 16061281 - 2⁹ = 16060769 is a prime.

It is a super-2 number, since 2×16061281² = 515929494721922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16061261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8030640 + 8030641.

It is an arithmetic number, because the mean of its divisors is an integer number (8030641).

Almost surely, 2^16061281 is an apocalyptic number.

It is an amenable number.

16061281 is a deficient number, since it is larger than the sum of its proper divisors (1).

16061281 is an equidigital number, since it uses as much as digits as its factorization.

16061281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 16061281 is about 4007.6528043232. The cubic root of 16061281 is about 252.3055052249.

The spelling of 16061281 in words is "sixteen million, sixty-one thousand, two hundred eighty-one".