1063561 has 2 divisors, whose sum is σ = 1063562. Its totient is φ = 1063560.

The previous prime is 1063553. The next prime is 1063597. The reversal of 1063561 is 1653601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855625 + 207936 = 925^2 + 456^2 .

It is a cyclic number.

It is not a de Polignac number, because 1063561 - 2³ = 1063553 is a prime.

It is a super-2 number, since 2×1063561² = 2262324001442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1063501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531780 + 531781.

It is an arithmetic number, because the mean of its divisors is an integer number (531781).

2^1063561 is an apocalyptic number.

It is an amenable number.

1063561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1063561 is an equidigital number, since it uses as much as digits as its factorization.

1063561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1063561 is about 1031.2909385813. The cubic root of 1063561 is about 102.0753320213.

The spelling of 1063561 in words is "one million, sixty-three thousand, five hundred sixty-one".