5257370681 has 2 divisors, whose sum is σ = 5257370682. Its totient is φ = 5257370680.

The previous prime is 5257370653. The next prime is 5257370689. The reversal of 5257370681 is 1860737525.

It is a happy number.

5257370681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2643605056 + 2613765625 = 51416^2 + 51125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5257370681 is a prime.

It is a super-2 number, since 2×5257370681² = 55279892954876807522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5257370689) 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, 2628685340 + 2628685341.

It is an arithmetic number, because the mean of its divisors is an integer number (2628685341).

Almost surely, 2^5257370681 is an apocalyptic number.

It is an amenable number.

5257370681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5257370681 is an equidigital number, since it uses as much as digits as its factorization.

5257370681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 44.

The square root of 5257370681 is about 72507.7284225620. The cubic root of 5257370681 is about 1738.8262971394.

The spelling of 5257370681 in words is "five billion, two hundred fifty-seven million, three hundred seventy thousand, six hundred eighty-one".