201445641 has 6 divisors (see below), whose sum is σ = 290977050. Its totient is φ = 134297088.

The previous prime is 201445609. The next prime is 201445663. The reversal of 201445641 is 146544102.

201445641 is a `hidden beast` number, since 2 + 0 + 14 + 4 + 5 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 107433225 + 94012416 = 10365^2 + 9696^2 .

It is not a de Polignac number, because 201445641 - 2⁵ = 201445609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201445681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11191416 + ... + 11191433.

It is an arithmetic number, because the mean of its divisors is an integer number (48496175).

Almost surely, 2^201445641 is an apocalyptic number.

It is an amenable number.

201445641 is a deficient number, since it is larger than the sum of its proper divisors (89531409).

201445641 is a wasteful number, since it uses less digits than its factorization.

201445641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22382855 (or 22382852 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 201445641 is about 14193.1547233164. The cubic root of 201445641 is about 586.2091929413.

Adding to 201445641 its reverse (146544102), we get a palindrome (347989743).

The spelling of 201445641 in words is "two hundred one million, four hundred forty-five thousand, six hundred forty-one".