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201449 is a prime number
BaseRepresentation
bin110001001011101001
3101020100002
4301023221
522421244
64152345
71466213
oct611351
9336302
10201449
11128396
12986b5
1370901
14535b3
153ea4e
hex312e9

201449 has 2 divisors, whose sum is σ = 201450. Its totient is φ = 201448.

The previous prime is 201437. The next prime is 201451. The reversal of 201449 is 944102.

201449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115600 + 85849 = 340^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 201449 - 28 = 201193 is a prime.

Together with 201451, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201449.

It is not a weakly prime, because it can be changed into another prime (201499) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100724 + 100725.

It is an arithmetic number, because the mean of its divisors is an integer number (100725).

2201449 is an apocalyptic number.

It is an amenable number.

201449 is a deficient number, since it is larger than the sum of its proper divisors (1).

201449 is an equidigital number, since it uses as much as digits as its factorization.

201449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 201449 is about 448.8307030496. The cubic root of 201449 is about 58.6212451166.

The spelling of 201449 in words is "two hundred one thousand, four hundred forty-nine".