1341156521 has 2 divisors, whose sum is σ = 1341156522. Its totient is φ = 1341156520.

The previous prime is 1341156499. The next prime is 1341156539. The reversal of 1341156521 is 1256511431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 682515625 + 658640896 = 26125^2 + 25664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1341156521 - 2⁶ = 1341156457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1341156121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670578260 + 670578261.

It is an arithmetic number, because the mean of its divisors is an integer number (670578261).

Almost surely, 2^1341156521 is an apocalyptic number.

It is an amenable number.

1341156521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1341156521 is an equidigital number, since it uses as much as digits as its factorization.

1341156521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 1341156521 is about 36621.8039015011. The cubic root of 1341156521 is about 1102.7908528994.

Adding to 1341156521 its reverse (1256511431), we get a palindrome (2597667952).

The spelling of 1341156521 in words is "one billion, three hundred forty-one million, one hundred fifty-six thousand, five hundred twenty-one".