5234643257 has 2 divisors, whose sum is σ = 5234643258. Its totient is φ = 5234643256.

The previous prime is 5234643187. The next prime is 5234643277. The reversal of 5234643257 is 7523464325.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4369342201 + 865301056 = 66101^2 + 29416^2 .

It is a cyclic number.

It is not a de Polignac number, because 5234643257 - 2¹⁶ = 5234577721 is a prime.

It is not a weakly prime, because it can be changed into another prime (5234643277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2617321628 + 2617321629.

It is an arithmetic number, because the mean of its divisors is an integer number (2617321629).

Almost surely, 2^5234643257 is an apocalyptic number.

It is an amenable number.

5234643257 is a deficient number, since it is larger than the sum of its proper divisors (1).

5234643257 is an equidigital number, since it uses as much as digits as its factorization.

5234643257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 41.

The square root of 5234643257 is about 72350.8345287046. The cubic root of 5234643257 is about 1736.3170500559.

The spelling of 5234643257 in words is "five billion, two hundred thirty-four million, six hundred forty-three thousand, two hundred fifty-seven".