16372201 has 8 divisors (see below), whose sum is σ = 16647624. Its totient is φ = 16099200.

The previous prime is 16372199. The next prime is 16372219. The reversal of 16372201 is 10227361.

It can be written as a sum of positive squares in 4 ways, for example, as 5978025 + 10394176 = 2445^2 + 3224^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16372201 - 2¹ = 16372199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16372261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17005 + ... + 17941.

It is an arithmetic number, because the mean of its divisors is an integer number (2080953).

Almost surely, 2^16372201 is an apocalyptic number.

It is an amenable number.

16372201 is a deficient number, since it is larger than the sum of its proper divisors (275423).

16372201 is a wasteful number, since it uses less digits than its factorization.

16372201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 16372201 is about 4046.2576536845. The cubic root of 16372201 is about 253.9231844513.

Adding to 16372201 its reverse (10227361), we get a palindrome (26599562).

The spelling of 16372201 in words is "sixteen million, three hundred seventy-two thousand, two hundred one".