160561771 has 2 divisors, whose sum is σ = 160561772. Its totient is φ = 160561770.

The previous prime is 160561769. The next prime is 160561789. The reversal of 160561771 is 177165061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 160561771 - 2¹ = 160561769 is a prime.

Together with 160561769, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (160561711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80280885 + 80280886.

It is an arithmetic number, because the mean of its divisors is an integer number (80280886).

Almost surely, 2^160561771 is an apocalyptic number.

160561771 is a deficient number, since it is larger than the sum of its proper divisors (1).

160561771 is an equidigital number, since it uses as much as digits as its factorization.

160561771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 160561771 is about 12671.2971317068. The cubic root of 160561771 is about 543.5181482847.

The spelling of 160561771 in words is "one hundred sixty million, five hundred sixty-one thousand, seven hundred seventy-one".