271056557 has 2 divisors, whose sum is σ = 271056558. Its totient is φ = 271056556.

The previous prime is 271056553. The next prime is 271056559. The reversal of 271056557 is 755650172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174741961 + 96314596 = 13219^2 + 9814^2 .

It is a cyclic number.

It is not a de Polignac number, because 271056557 - 2² = 271056553 is a prime.

Together with 271056559, 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 271056557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (271056553) 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 as a sum of consecutive naturals, namely, 135528278 + 135528279.

It is an arithmetic number, because the mean of its divisors is an integer number (135528279).

Almost surely, 2^271056557 is an apocalyptic number.

It is an amenable number.

271056557 is a deficient number, since it is larger than the sum of its proper divisors (1).

271056557 is an equidigital number, since it uses as much as digits as its factorization.

271056557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 271056557 is about 16463.7953400788. The cubic root of 271056557 is about 647.1723775010.

The spelling of 271056557 in words is "two hundred seventy-one million, fifty-six thousand, five hundred fifty-seven".