201448805 has 4 divisors (see below), whose sum is σ = 241738572. Its totient is φ = 161159040.

The previous prime is 201448783. The next prime is 201448817. The reversal of 201448805 is 508844102.

It is a happy number.

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 144913444 + 56535361 = 12038^2 + 7519^2 .

It is not a de Polignac number, because 201448805 - 2¹² = 201444709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20144876 + ... + 20144885.

It is an arithmetic number, because the mean of its divisors is an integer number (60434643).

Almost surely, 2^201448805 is an apocalyptic number.

It is an amenable number.

201448805 is a deficient number, since it is larger than the sum of its proper divisors (40289767).

201448805 is an equidigital number, since it uses as much as digits as its factorization.

201448805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40289766.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 201448805 is about 14193.2661850611. The cubic root of 201448805 is about 586.2122620177.

The spelling of 201448805 in words is "two hundred one million, four hundred forty-eight thousand, eight hundred five".