160021541 has 2 divisors, whose sum is σ = 160021542. Its totient is φ = 160021540.

The previous prime is 160021529. The next prime is 160021549. The reversal of 160021541 is 145120061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147525316 + 12496225 = 12146^2 + 3535^2 .

It is a cyclic number.

It is not a de Polignac number, because 160021541 - 2¹⁰ = 160020517 is a prime.

It is a Sophie Germain prime.

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 (160021549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80010770 + 80010771.

It is an arithmetic number, because the mean of its divisors is an integer number (80010771).

Almost surely, 2^160021541 is an apocalyptic number.

It is an amenable number.

160021541 is a deficient number, since it is larger than the sum of its proper divisors (1).

160021541 is an equidigital number, since it uses as much as digits as its factorization.

160021541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 160021541 is about 12649.9620948049. The cubic root of 160021541 is about 542.9078852548.

The spelling of 160021541 in words is "one hundred sixty million, twenty-one thousand, five hundred forty-one".