16100001 has 12 divisors (see below), whose sum is σ = 23335312. Its totient is φ = 10696536.

The previous prime is 16099987. The next prime is 16100027. The reversal of 16100001 is 10000161.

16100001 = T₁₅₈ + T₁₅₉ + ... + T₄₆₄.

It is not a de Polignac number, because 16100001 - 2⁷ = 16099873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16100041) 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 in 11 ways as a sum of consecutive naturals, for example, 151 + ... + 5676.

Almost surely, 2^16100001 is an apocalyptic number.

It is an amenable number.

16100001 is a deficient number, since it is larger than the sum of its proper divisors (7235311).

16100001 is a wasteful number, since it uses less digits than its factorization.

16100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140 (or 6137 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 16100001 is about 4012.4806541590. The cubic root of 16100001 is about 252.5080924113.

Adding to 16100001 its reverse (10000161), we get a palindrome (26100162).

The spelling of 16100001 in words is "sixteen million, one hundred thousand, one".