16204201 has 4 divisors (see below), whose sum is σ = 17450692. Its totient is φ = 14957712.

The previous prime is 16204193. The next prime is 16204211. The reversal of 16204201 is 10240261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10240261 = 31 ⋅330331.

It can be written as a sum of positive squares in 2 ways, for example, as 7507600 + 8696601 = 2740^2 + 2949^2 .

It is a cyclic number.

It is not a de Polignac number, because 16204201 - 2³ = 16204193 is a prime.

It is a super-2 number, since 2×16204201² = 525152260096802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16204211) 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 3 ways as a sum of consecutive naturals, for example, 623226 + ... + 623251.

It is an arithmetic number, because the mean of its divisors is an integer number (4362673).

Almost surely, 2^16204201 is an apocalyptic number.

It is an amenable number.

16204201 is a deficient number, since it is larger than the sum of its proper divisors (1246491).

16204201 is a wasteful number, since it uses less digits than its factorization.

16204201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246490.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 16204201 is about 4025.4441990916. Note that the first 3 decimals coincide. The cubic root of 16204201 is about 253.0516696794.

Adding to 16204201 its reverse (10240261), we get a palindrome (26444462).

The spelling of 16204201 in words is "sixteen million, two hundred four thousand, two hundred one".