4571991757 has 2 divisors, whose sum is σ = 4571991758. Its totient is φ = 4571991756.

The previous prime is 4571991733. The next prime is 4571991797. The reversal of 4571991757 is 7571991754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4184925481 + 387066276 = 64691^2 + 19674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4571991757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4571991698 and 4571991707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4571991797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2285995878 + 2285995879.

It is an arithmetic number, because the mean of its divisors is an integer number (2285995879).

Almost surely, 2^4571991757 is an apocalyptic number.

It is an amenable number.

4571991757 is a deficient number, since it is larger than the sum of its proper divisors (1).

4571991757 is an equidigital number, since it uses as much as digits as its factorization.

4571991757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2778300, while the sum is 55.

The square root of 4571991757 is about 67616.5050634828. The cubic root of 4571991757 is about 1659.7212186070.

The spelling of 4571991757 in words is "four billion, five hundred seventy-one million, nine hundred ninety-one thousand, seven hundred fifty-seven".