12751517 has 2 divisors, whose sum is σ = 12751518. Its totient is φ = 12751516.

The previous prime is 12751481. The next prime is 12751537. The reversal of 12751517 is 71515721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8886361 + 3865156 = 2981^2 + 1966^2 .

It is a cyclic number.

It is not a de Polignac number, because 12751517 - 2¹² = 12747421 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12751517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12751537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375758 + 6375759.

It is an arithmetic number, because the mean of its divisors is an integer number (6375759).

Almost surely, 2^12751517 is an apocalyptic number.

It is an amenable number.

12751517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12751517 is an equidigital number, since it uses as much as digits as its factorization.

12751517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2450, while the sum is 29.

The square root of 12751517 is about 3570.9266304420. The cubic root of 12751517 is about 233.6257013087.

The spelling of 12751517 in words is "twelve million, seven hundred fifty-one thousand, five hundred seventeen".