160767221 has 2 divisors, whose sum is σ = 160767222. Its totient is φ = 160767220.

The previous prime is 160767203. The next prime is 160767223. The reversal of 160767221 is 122767061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135466321 + 25300900 = 11639^2 + 5030^2 .

It is an emirp because it is prime and its reverse (122767061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 160767221 - 2⁶ = 160767157 is a prime.

It is a Sophie Germain prime.

Together with 160767223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160767223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80383610 + 80383611.

It is an arithmetic number, because the mean of its divisors is an integer number (80383611).

Almost surely, 2^160767221 is an apocalyptic number.

It is an amenable number.

160767221 is a deficient number, since it is larger than the sum of its proper divisors (1).

160767221 is an equidigital number, since it uses as much as digits as its factorization.

160767221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 160767221 is about 12679.4014448632. The cubic root of 160767221 is about 543.7498726207.

The spelling of 160767221 in words is "one hundred sixty million, seven hundred sixty-seven thousand, two hundred twenty-one".