5207813857 has 2 divisors, whose sum is σ = 5207813858. Its totient is φ = 5207813856.

The previous prime is 5207813851. The next prime is 5207813869. The reversal of 5207813857 is 7583187025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3658919121 + 1548894736 = 60489^2 + 39356^2 .

It is a cyclic number.

It is not a de Polignac number, because 5207813857 - 2¹¹ = 5207811809 is a prime.

It is a super-2 number, since 2×5207813857² = 54242650338322432898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5207813851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2603906928 + 2603906929.

It is an arithmetic number, because the mean of its divisors is an integer number (2603906929).

Almost surely, 2^5207813857 is an apocalyptic number.

It is an amenable number.

5207813857 is a deficient number, since it is larger than the sum of its proper divisors (1).

5207813857 is an equidigital number, since it uses as much as digits as its factorization.

5207813857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 5207813857 is about 72165.1845213466. The cubic root of 5207813857 is about 1733.3455543969.

The spelling of 5207813857 in words is "five billion, two hundred seven million, eight hundred thirteen thousand, eight hundred fifty-seven".