12751481 has 2 divisors, whose sum is σ = 12751482. Its totient is φ = 12751480.

The previous prime is 12751471. The next prime is 12751517. The reversal of 12751481 is 18415721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10995856 + 1755625 = 3316^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 12751481 - 2¹⁰ = 12750457 is a prime.

It is a super-2 number, since 2×12751481² = 325200535386722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12751441) 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, 6375740 + 6375741.

It is an arithmetic number, because the mean of its divisors is an integer number (6375741).

Almost surely, 2^12751481 is an apocalyptic number.

It is an amenable number.

12751481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12751481 is an equidigital number, since it uses as much as digits as its factorization.

12751481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 29.

The square root of 12751481 is about 3570.9215897300. The cubic root of 12751481 is about 233.6254814517.

The spelling of 12751481 in words is "twelve million, seven hundred fifty-one thousand, four hundred eighty-one".