1351505252549 has 2 divisors, whose sum is σ = 1351505252550. Its totient is φ = 1351505252548.

The previous prime is 1351505252527. The next prime is 1351505252567. The reversal of 1351505252549 is 9452525051531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 849129076324 + 502376176225 = 921482^2 + 708785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351505252549 - 2¹⁶ = 1351505187013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351505252579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675752626274 + 675752626275.

It is an arithmetic number, because the mean of its divisors is an integer number (675752626275).

Almost surely, 2^{1351505252549} is an apocalyptic number.

It is an amenable number.

1351505252549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351505252549 is an equidigital number, since it uses as much as digits as its factorization.

1351505252549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350000, while the sum is 47.

The spelling of 1351505252549 in words is "one trillion, three hundred fifty-one billion, five hundred five million, two hundred fifty-two thousand, five hundred forty-nine".