1315002257 has 2 divisors, whose sum is σ = 1315002258. Its totient is φ = 1315002256.

The previous prime is 1315002251. The next prime is 1315002259. The reversal of 1315002257 is 7522005131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1133264896 + 181737361 = 33664^2 + 13481^2 .

It is an emirp because it is prime and its reverse (7522005131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315002257 - 2²⁶ = 1247893393 is a prime.

Together with 1315002259, 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 (1315002251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657501128 + 657501129.

It is an arithmetic number, because the mean of its divisors is an integer number (657501129).

Almost surely, 2^1315002257 is an apocalyptic number.

It is an amenable number.

1315002257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315002257 is an equidigital number, since it uses as much as digits as its factorization.

1315002257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 1315002257 is about 36262.9598488596. The cubic root of 1315002257 is about 1095.5751326301.

Adding to 1315002257 its reverse (7522005131), we get a palindrome (8837007388).

The spelling of 1315002257 in words is "one billion, three hundred fifteen million, two thousand, two hundred fifty-seven".