16445601 has 12 divisors (see below), whose sum is σ = 24158160. Its totient is φ = 10777560.

The previous prime is 16445587. The next prime is 16445603. The reversal of 16445601 is 10654461.

16445601 is a `hidden beast` number, since 16 + 4 + 45 + 601 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-16445601 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16445603) 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, 14955 + ... + 16016.

It is an arithmetic number, because the mean of its divisors is an integer number (2013180).

Almost surely, 2^16445601 is an apocalyptic number.

It is an amenable number.

16445601 is a deficient number, since it is larger than the sum of its proper divisors (7712559).

16445601 is a wasteful number, since it uses less digits than its factorization.

16445601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31036 (or 31033 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16445601 is about 4055.3176201131. The cubic root of 16445601 is about 254.3020823624.

The spelling of 16445601 in words is "sixteen million, four hundred forty-five thousand, six hundred one".