2057041561 has 2 divisors, whose sum is σ = 2057041562. Its totient is φ = 2057041560.

The previous prime is 2057041559. The next prime is 2057041577. The reversal of 2057041561 is 1651407502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2035363225 + 21678336 = 45115^2 + 4656^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057041561 - 2¹ = 2057041559 is a prime.

Together with 2057041559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2057141561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028520780 + 1028520781.

It is an arithmetic number, because the mean of its divisors is an integer number (1028520781).

Almost surely, 2^2057041561 is an apocalyptic number.

It is an amenable number.

2057041561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057041561 is an equidigital number, since it uses as much as digits as its factorization.

2057041561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 2057041561 is about 45354.6200623487. The cubic root of 2057041561 is about 1271.7869240895.

The spelling of 2057041561 in words is "two billion, fifty-seven million, forty-one thousand, five hundred sixty-one".