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199201 = 296869
BaseRepresentation
bin110000101000100001
3101010020211
4300220201
522333301
64134121
71456522
oct605041
9333224
10199201
11126732
1297341
136c892
1452849
153e051
hex30a21

199201 has 4 divisors (see below), whose sum is σ = 206100. Its totient is φ = 192304.

The previous prime is 199193. The next prime is 199207. The reversal of 199201 is 102991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102991 = 714713.

It can be written as a sum of positive squares in 2 ways, for example, as 40000 + 159201 = 200^2 + 399^2 .

It is a cyclic number.

It is not a de Polignac number, because 199201 - 23 = 199193 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 (199207) 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, 3406 + ... + 3463.

It is an arithmetic number, because the mean of its divisors is an integer number (51525).

2199201 is an apocalyptic number.

It is an amenable number.

199201 is a deficient number, since it is larger than the sum of its proper divisors (6899).

199201 is an equidigital number, since it uses as much as digits as its factorization.

199201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6898.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 199201 is about 446.3193923638. The cubic root of 199201 is about 58.4023744891.

It can be divided in two parts, 199 and 201, that added together give a square (400 = 202).

The spelling of 199201 in words is "one hundred ninety-nine thousand, two hundred one".

Divisors: 1 29 6869 199201