4160561 has 2 divisors, whose sum is σ = 4160562. Its totient is φ = 4160560.

The previous prime is 4160549. The next prime is 4160567. The reversal of 4160561 is 1650614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3097600 + 1062961 = 1760^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 4160561 - 2¹⁴ = 4144177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4160567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2080280 + 2080281.

It is an arithmetic number, because the mean of its divisors is an integer number (2080281).

Almost surely, 2^4160561 is an apocalyptic number.

It is an amenable number.

4160561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4160561 is an equidigital number, since it uses as much as digits as its factorization.

4160561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 4160561 is about 2039.7453272406. The cubic root of 4160561 is about 160.8362595928.

The spelling of 4160561 in words is "four million, one hundred sixty thousand, five hundred sixty-one".