2571745481 has 2 divisors, whose sum is σ = 2571745482. Its totient is φ = 2571745480.

The previous prime is 2571745453. The next prime is 2571745507. The reversal of 2571745481 is 1845471752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1941283600 + 630461881 = 44060^2 + 25109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2571745481 is a prime.

It is a super-3 number, since 3×2571745481³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2571745081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1285872740 + 1285872741.

It is an arithmetic number, because the mean of its divisors is an integer number (1285872741).

Almost surely, 2^2571745481 is an apocalyptic number.

It is an amenable number.

2571745481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2571745481 is an equidigital number, since it uses as much as digits as its factorization.

2571745481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 313600, while the sum is 44.

The square root of 2571745481 is about 50712.3799579550. The cubic root of 2571745481 is about 1370.0697002207.

The spelling of 2571745481 in words is "two billion, five hundred seventy-one million, seven hundred forty-five thousand, four hundred eighty-one".