1115606543 has 2 divisors, whose sum is σ = 1115606544. Its totient is φ = 1115606542.

The previous prime is 1115606533. The next prime is 1115606549. The reversal of 1115606543 is 3456065111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1115606543 - 2¹² = 1115602447 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 (1115606549) 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, 557803271 + 557803272.

It is an arithmetic number, because the mean of its divisors is an integer number (557803272).

Almost surely, 2^1115606543 is an apocalyptic number.

1115606543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115606543 is an equidigital number, since it uses as much as digits as its factorization.

1115606543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1115606543 is about 33400.6967442298. The cubic root of 1115606543 is about 1037.1391242703.

The spelling of 1115606543 in words is "one billion, one hundred fifteen million, six hundred six thousand, five hundred forty-three".