1068532561 has 2 divisors, whose sum is σ = 1068532562. Its totient is φ = 1068532560.

The previous prime is 1068532537. The next prime is 1068532573. The reversal of 1068532561 is 1652358601.

1068532561 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 can be written as a sum of positive squares in only one way, i.e., 641862225 + 426670336 = 25335^2 + 20656^2 .

It is an emirp because it is prime and its reverse (1652358601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1068532561 - 2¹⁷ = 1068401489 is a prime.

It is a super-2 number, since 2×1068532561² = 2283523667834437442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1068532561.

It is not a weakly prime, because it can be changed into another prime (1068532061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534266280 + 534266281.

It is an arithmetic number, because the mean of its divisors is an integer number (534266281).

Almost surely, 2^1068532561 is an apocalyptic number.

It is an amenable number.

1068532561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068532561 is an equidigital number, since it uses as much as digits as its factorization.

1068532561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1068532561 is about 32688.4163122045. The cubic root of 1068532561 is about 1022.3413346503.

The spelling of 1068532561 in words is "one billion, sixty-eight million, five hundred thirty-two thousand, five hundred sixty-one".