1069051561 has 2 divisors, whose sum is σ = 1069051562. Its totient is φ = 1069051560.

The previous prime is 1069051559. The next prime is 1069051567. The reversal of 1069051561 is 1651509601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 566440000 + 502611561 = 23800^2 + 22419^2 .

It is a cyclic number.

It is not a de Polignac number, because 1069051561 - 2¹ = 1069051559 is a prime.

It is a super-2 number, since 2×1069051561² = 2285742480153073442, which contains 22 as substring.

Together with 1069051559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1069051567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534525780 + 534525781.

It is an arithmetic number, because the mean of its divisors is an integer number (534525781).

Almost surely, 2^1069051561 is an apocalyptic number.

It is an amenable number.

1069051561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1069051561 is an equidigital number, since it uses as much as digits as its factorization.

1069051561 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1069051561 is about 32696.3539404625. The cubic root of 1069051561 is about 1022.5068293014.

The spelling of 1069051561 in words is "one billion, sixty-nine million, fifty-one thousand, five hundred sixty-one".