16445001 has 16 divisors (see below), whose sum is σ = 24019200. Its totient is φ = 9961728.

The previous prime is 16444993. The next prime is 16445027. The reversal of 16445001 is 10054461.

It is not a de Polignac number, because 16445001 - 2³ = 16444993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16445041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4081 + ... + 7038.

It is an arithmetic number, because the mean of its divisors is an integer number (1501200).

Almost surely, 2^16445001 is an apocalyptic number.

It is an amenable number.

16445001 is a deficient number, since it is larger than the sum of its proper divisors (7574199).

16445001 is a wasteful number, since it uses less digits than its factorization.

16445001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 16445001 is about 4055.2436424955. The cubic root of 16445001 is about 254.2989896791.

Adding to 16445001 its reverse (10054461), we get a palindrome (26499462).

The spelling of 16445001 in words is "sixteen million, four hundred forty-five thousand, one".