5135243257 has 2 divisors, whose sum is σ = 5135243258. Its totient is φ = 5135243256.

The previous prime is 5135243213. The next prime is 5135243287. The reversal of 5135243257 is 7523425315.

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., 3283748416 + 1851494841 = 57304^2 + 43029^2 .

It is a cyclic number.

It is not a de Polignac number, because 5135243257 - 2¹⁵ = 5135210489 is a prime.

It is not a weakly prime, because it can be changed into another prime (5135243287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2567621628 + 2567621629.

It is an arithmetic number, because the mean of its divisors is an integer number (2567621629).

Almost surely, 2^5135243257 is an apocalyptic number.

It is an amenable number.

5135243257 is a deficient number, since it is larger than the sum of its proper divisors (1).

5135243257 is an equidigital number, since it uses as much as digits as its factorization.

5135243257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 37.

The square root of 5135243257 is about 71660.6116147497. The cubic root of 5135243257 is about 1725.2565053833.

The spelling of 5135243257 in words is "five billion, one hundred thirty-five million, two hundred forty-three thousand, two hundred fifty-seven".