160256021 has 2 divisors, whose sum is σ = 160256022. Its totient is φ = 160256020.

The previous prime is 160256011. The next prime is 160256069. The reversal of 160256021 is 120652061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138062500 + 22193521 = 11750^2 + 4711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160256021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160256011) 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, 80128010 + 80128011.

It is an arithmetic number, because the mean of its divisors is an integer number (80128011).

Almost surely, 2^160256021 is an apocalyptic number.

It is an amenable number.

160256021 is a deficient number, since it is larger than the sum of its proper divisors (1).

160256021 is an equidigital number, since it uses as much as digits as its factorization.

160256021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 160256021 is about 12659.2267141402. The cubic root of 160256021 is about 543.1729306409.

The spelling of 160256021 in words is "one hundred sixty million, two hundred fifty-six thousand, twenty-one".