271720513 has 2 divisors, whose sum is σ = 271720514. Its totient is φ = 271720512.

The previous prime is 271720451. The next prime is 271720529. The reversal of 271720513 is 315027172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266734224 + 4986289 = 16332^2 + 2233^2 .

It is a cyclic number.

It is not a de Polignac number, because 271720513 - 2¹⁷ = 271589441 is a prime.

It is not a weakly prime, because it can be changed into another prime (271720543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135860256 + 135860257.

It is an arithmetic number, because the mean of its divisors is an integer number (135860257).

Almost surely, 2^271720513 is an apocalyptic number.

It is an amenable number.

271720513 is a deficient number, since it is larger than the sum of its proper divisors (1).

271720513 is an equidigital number, since it uses as much as digits as its factorization.

271720513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 271720513 is about 16483.9471304661. The cubic root of 271720513 is about 647.7003652364.

Adding to 271720513 its reverse (315027172), we get a palindrome (586747685).

The spelling of 271720513 in words is "two hundred seventy-one million, seven hundred twenty thousand, five hundred thirteen".