1156565041 has 2 divisors, whose sum is σ = 1156565042. Its totient is φ = 1156565040.

The previous prime is 1156565027. The next prime is 1156565087. The reversal of 1156565041 is 1405656511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1071187441 + 85377600 = 32729^2 + 9240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1156565041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1156564988 and 1156565006.

It is not a weakly prime, because it can be changed into another prime (1156565441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578282520 + 578282521.

It is an arithmetic number, because the mean of its divisors is an integer number (578282521).

Almost surely, 2^1156565041 is an apocalyptic number.

It is an amenable number.

1156565041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156565041 is an equidigital number, since it uses as much as digits as its factorization.

1156565041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 1156565041 is about 34008.3084113280. The cubic root of 1156565041 is about 1049.6794307859.

The spelling of 1156565041 in words is "one billion, one hundred fifty-six million, five hundred sixty-five thousand, forty-one".