5749657561 has 2 divisors, whose sum is σ = 5749657562. Its totient is φ = 5749657560.

The previous prime is 5749657559. The next prime is 5749657607. The reversal of 5749657561 is 1657569475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3767627161 + 1982030400 = 61381^2 + 44520^2 .

It is a cyclic number.

It is not a de Polignac number, because 5749657561 - 2¹ = 5749657559 is a prime.

Together with 5749657559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5749657861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2874828780 + 2874828781.

It is an arithmetic number, because the mean of its divisors is an integer number (2874828781).

Almost surely, 2^5749657561 is an apocalyptic number.

It is an amenable number.

5749657561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5749657561 is an equidigital number, since it uses as much as digits as its factorization.

5749657561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938000, while the sum is 55.

The square root of 5749657561 is about 75826.4964309970. The cubic root of 5749657561 is about 1791.4883702996.

The spelling of 5749657561 in words is "five billion, seven hundred forty-nine million, six hundred fifty-seven thousand, five hundred sixty-one".