160571221 has 2 divisors, whose sum is σ = 160571222. Its totient is φ = 160571220.

The previous prime is 160571207. The next prime is 160571237. The reversal of 160571221 is 122175061.

160571221 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., 110019121 + 50552100 = 10489^2 + 7110^2 .

It is a cyclic number.

It is not a de Polignac number, because 160571221 - 2⁵ = 160571189 is a prime.

It is equal to p_9004705 and since 160571221 and 9004705 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160571321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80285610 + 80285611.

It is an arithmetic number, because the mean of its divisors is an integer number (80285611).

Almost surely, 2^160571221 is an apocalyptic number.

It is an amenable number.

160571221 is a deficient number, since it is larger than the sum of its proper divisors (1).

160571221 is an equidigital number, since it uses as much as digits as its factorization.

160571221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 160571221 is about 12671.6700162212. The cubic root of 160571221 is about 543.5288111503.

The spelling of 160571221 in words is "one hundred sixty million, five hundred seventy-one thousand, two hundred twenty-one".