1061556563 has 2 divisors, whose sum is σ = 1061556564. Its totient is φ = 1061556562.

The previous prime is 1061556547. The next prime is 1061556569. The reversal of 1061556563 is 3656551601.

1061556563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (3656551601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1061556563 - 2⁴ = 1061556547 is a prime.

It is a super-2 number, since 2×1061556563² = 2253804672896745938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1061556569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530778281 + 530778282.

It is an arithmetic number, because the mean of its divisors is an integer number (530778282).

Almost surely, 2^1061556563 is an apocalyptic number.

1061556563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061556563 is an equidigital number, since it uses as much as digits as its factorization.

1061556563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 1061556563 is about 32581.5371491279. The cubic root of 1061556563 is about 1020.1116637332. Note that the first 3 decimals are identical.

The spelling of 1061556563 in words is "one billion, sixty-one million, five hundred fifty-six thousand, five hundred sixty-three".