161030001 has 32 divisors (see below), whose sum is σ = 254088576. Its totient is φ = 89600000.

The previous prime is 161029993. The next prime is 161030003. The reversal of 161030001 is 100030161.

It is a cyclic number.

It is not a de Polignac number, because 161030001 - 2³ = 161029993 is a prime.

It is a super-2 number, since 2×161030001² = 51861322444120002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161030003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19501 + ... + 26501.

It is an arithmetic number, because the mean of its divisors is an integer number (7940268).

It is a Poulet number, since it divides 2^161030000-1.

Almost surely, 2^161030001 is an apocalyptic number.

161030001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161030001 is a deficient number, since it is larger than the sum of its proper divisors (93058575).

161030001 is a wasteful number, since it uses less digits than its factorization.

161030001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7073.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 161030001 is about 12689.7596903960. The cubic root of 161030001 is about 544.0459711457.

Adding to 161030001 its reverse (100030161), we get a palindrome (261060162).

The spelling of 161030001 in words is "one hundred sixty-one million, thirty thousand, one".