5139257 has 2 divisors, whose sum is σ = 5139258. Its totient is φ = 5139256.

The previous prime is 5139223. The next prime is 5139259. The reversal of 5139257 is 7529315.

5139257 is nontrivially palindromic in base 2.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4923961 + 215296 = 2219^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 5139257 - 2¹² = 5135161 is a prime.

Together with 5139259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5139259) 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, 2569628 + 2569629.

It is an arithmetic number, because the mean of its divisors is an integer number (2569629).

Almost surely, 2^5139257 is an apocalyptic number.

It is an amenable number.

5139257 is a deficient number, since it is larger than the sum of its proper divisors (1).

5139257 is an equidigital number, since it uses as much as digits as its factorization.

5139257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 32.

The square root of 5139257 is about 2266.9929422034. The cubic root of 5139257 is about 172.5705879283.

Adding to 5139257 its sum of digits (32), we get a square (5139289 = 2267²).

The spelling of 5139257 in words is "five million, one hundred thirty-nine thousand, two hundred fifty-seven".