1355669543 has 2 divisors, whose sum is σ = 1355669544. Its totient is φ = 1355669542.

The previous prime is 1355669521. The next prime is 1355669561. The reversal of 1355669543 is 3459665531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1355669543 - 2²⁸ = 1087234087 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355669593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677834771 + 677834772.

It is an arithmetic number, because the mean of its divisors is an integer number (677834772).

Almost surely, 2^1355669543 is an apocalyptic number.

1355669543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355669543 is an equidigital number, since it uses as much as digits as its factorization.

1355669543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458000, while the sum is 47.

The square root of 1355669543 is about 36819.4180154983. The cubic root of 1355669543 is about 1106.7544572881.

The spelling of 1355669543 in words is "one billion, three hundred fifty-five million, six hundred sixty-nine thousand, five hundred forty-three".