16201133 has 4 divisors (see below), whose sum is σ = 17447388. Its totient is φ = 14954880.

The previous prime is 16201123. The next prime is 16201139. The reversal of 16201133 is 33110261.

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 1965604 + 14235529 = 1402^2 + 3773^2 .

It is a cyclic number.

It is not a de Polignac number, because 16201133 - 2⁴ = 16201117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16201139) 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, 623108 + ... + 623133.

It is an arithmetic number, because the mean of its divisors is an integer number (4361847).

Almost surely, 2^16201133 is an apocalyptic number.

16201133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16201133 is a deficient number, since it is larger than the sum of its proper divisors (1246255).

16201133 is a wasteful number, since it uses less digits than its factorization.

16201133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246254.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 16201133 is about 4025.0631050954. The cubic root of 16201133 is about 253.0356982753.

Adding to 16201133 its reverse (33110261), we get a palindrome (49311394).

The spelling of 16201133 in words is "sixteen million, two hundred one thousand, one hundred thirty-three".