205481271 has 8 divisors (see below), whose sum is σ = 274123264. Its totient is φ = 136913400.

The previous prime is 205481251. The next prime is 205481273. The reversal of 205481271 is 172184502.

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

It is not a de Polignac number, because 205481271 - 2⁶ = 205481207 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 (205481273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11701 + ... + 23406.

It is an arithmetic number, because the mean of its divisors is an integer number (34265408).

Almost surely, 2^205481271 is an apocalyptic number.

205481271 is a deficient number, since it is larger than the sum of its proper divisors (68641993).

205481271 is a wasteful number, since it uses less digits than its factorization.

205481271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37061.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 205481271 is about 14334.6179230561. The cubic root of 205481271 is about 590.0979163353.

The spelling of 205481271 in words is "two hundred five million, four hundred eighty-one thousand, two hundred seventy-one".