161071001 has 32 divisors (see below), whose sum is σ = 212018688. Its totient is φ = 118863360.

The previous prime is 161070997. The next prime is 161071019. The reversal of 161071001 is 100170161.

It is not a de Polignac number, because 161071001 - 2² = 161070997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161071051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84875 + ... + 86751.

It is an arithmetic number, because the mean of its divisors is an integer number (6625584).

Almost surely, 2^161071001 is an apocalyptic number.

It is an amenable number.

161071001 is a deficient number, since it is larger than the sum of its proper divisors (50947687).

161071001 is a wasteful number, since it uses less digits than its factorization.

161071001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 161071001 is about 12691.3750634043. The cubic root of 161071001 is about 544.0921405796.

The spelling of 161071001 in words is "one hundred sixty-one million, seventy-one thousand, one".