160180561 has 2 divisors, whose sum is σ = 160180562. Its totient is φ = 160180560.

The previous prime is 160180549. The next prime is 160180577. The reversal of 160180561 is 165081061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135489600 + 24690961 = 11640^2 + 4969^2 .

It is a cyclic number.

It is not a de Polignac number, because 160180561 - 2⁵ = 160180529 is a prime.

It is not a weakly prime, because it can be changed into another prime (160180261) 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, 80090280 + 80090281.

It is an arithmetic number, because the mean of its divisors is an integer number (80090281).

Almost surely, 2^160180561 is an apocalyptic number.

It is an amenable number.

160180561 is a deficient number, since it is larger than the sum of its proper divisors (1).

160180561 is an equidigital number, since it uses as much as digits as its factorization.

160180561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 160180561 is about 12656.2459283944. The cubic root of 160180561 is about 543.0876623639.

The spelling of 160180561 in words is "one hundred sixty million, one hundred eighty thousand, five hundred sixty-one".