1056115609 has 2 divisors, whose sum is σ = 1056115610. Its totient is φ = 1056115608.

The previous prime is 1056115559. The next prime is 1056115651. The reversal of 1056115609 is 9065116501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855270025 + 200845584 = 29245^2 + 14172^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056115609 - 2⁷ = 1056115481 is a prime.

It is a super-2 number, since 2×1056115609² = 2230760359146881762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1056110609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528057804 + 528057805.

It is an arithmetic number, because the mean of its divisors is an integer number (528057805).

Almost surely, 2^1056115609 is an apocalyptic number.

It is an amenable number.

1056115609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056115609 is an equidigital number, since it uses as much as digits as its factorization.

1056115609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 1056115609 is about 32497.9323803838. The cubic root of 1056115609 is about 1018.3658341793.

The spelling of 1056115609 in words is "one billion, fifty-six million, one hundred fifteen thousand, six hundred nine".