160055721 has 12 divisors (see below), whose sum is σ = 264219072. Its totient is φ = 91460376.

The previous prime is 160055719. The next prime is 160055737. The reversal of 160055721 is 127550061.

160055721 is a `hidden beast` number, since 1 + 600 + 5 + 57 + 2 + 1 = 666.

It is not a de Polignac number, because 160055721 - 2¹ = 160055719 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (160055921) 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 in 11 ways as a sum of consecutive naturals, for example, 1270221 + ... + 1270346.

It is an arithmetic number, because the mean of its divisors is an integer number (22018256).

Almost surely, 2^160055721 is an apocalyptic number.

It is an amenable number.

160055721 is a deficient number, since it is larger than the sum of its proper divisors (104163351).

160055721 is a wasteful number, since it uses less digits than its factorization.

160055721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540580 (or 2540577 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 160055721 is about 12651.3130148613. The cubic root of 160055721 is about 542.9465368646.

The spelling of 160055721 in words is "one hundred sixty million, fifty-five thousand, seven hundred twenty-one".