16200001 has 4 divisors (see below), whose sum is σ = 16235604. Its totient is φ = 16164400.

The previous prime is 16199971. The next prime is 16200013. The reversal of 16200001 is 10000261.

16200001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5953600 + 10246401 = 2440^2 + 3201^2 .

It is a cyclic number.

It is not a de Polignac number, because 16200001 - 2¹¹ = 16197953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16200061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17110 + ... + 18031.

It is an arithmetic number, because the mean of its divisors is an integer number (4058901).

Almost surely, 2^16200001 is an apocalyptic number.

It is an amenable number.

16200001 is a deficient number, since it is larger than the sum of its proper divisors (35603).

16200001 is an equidigital number, since it uses as much as digits as its factorization.

16200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35602.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 16200001 is about 4024.9224837256. The cubic root of 16200001 is about 253.0298047969.

Adding to 16200001 its reverse (10000261), we get a palindrome (26200262).

The spelling of 16200001 in words is "sixteen million, two hundred thousand, one".