1351505252497 has 2 divisors, whose sum is σ = 1351505252498. Its totient is φ = 1351505252496.

The previous prime is 1351505252453. The next prime is 1351505252527. The reversal of 1351505252497 is 7942525051531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1287882252801 + 63622999696 = 1134849^2 + 252236^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351505252497 - 2¹⁹ = 1351504728209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1351505252497.

It is not a weakly prime, because it can be changed into another prime (1351505252197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675752626248 + 675752626249.

It is an arithmetic number, because the mean of its divisors is an integer number (675752626249).

Almost surely, 2^{1351505252497} is an apocalyptic number.

It is an amenable number.

1351505252497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351505252497 is an equidigital number, since it uses as much as digits as its factorization.

1351505252497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890000, while the sum is 49.

The spelling of 1351505252497 in words is "one trillion, three hundred fifty-one billion, five hundred five million, two hundred fifty-two thousand, four hundred ninety-seven".