2871557461 has 2 divisors, whose sum is σ = 2871557462. Its totient is φ = 2871557460.

The previous prime is 2871557459. The next prime is 2871557477. The reversal of 2871557461 is 1647551782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2032296561 + 839260900 = 45081^2 + 28970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2871557461 - 2¹ = 2871557459 is a prime.

Together with 2871557459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2871557411) 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, 1435778730 + 1435778731.

It is an arithmetic number, because the mean of its divisors is an integer number (1435778731).

Almost surely, 2^2871557461 is an apocalyptic number.

It is an amenable number.

2871557461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2871557461 is an equidigital number, since it uses as much as digits as its factorization.

2871557461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 46.

The square root of 2871557461 is about 53586.9150166344. The cubic root of 2871557461 is about 1421.3657198869.

The spelling of 2871557461 in words is "two billion, eight hundred seventy-one million, five hundred fifty-seven thousand, four hundred sixty-one".