1063155563 has 2 divisors, whose sum is σ = 1063155564. Its totient is φ = 1063155562.

The previous prime is 1063155553. The next prime is 1063155617. The reversal of 1063155563 is 3655513601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1063155563 - 2⁴ = 1063155547 is a prime.

It is a super-2 number, since 2×1063155563² = 2260599502275693938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1063155523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531577781 + 531577782.

It is an arithmetic number, because the mean of its divisors is an integer number (531577782).

Almost surely, 2^1063155563 is an apocalyptic number.

1063155563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1063155563 is an equidigital number, since it uses as much as digits as its factorization.

1063155563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 1063155563 is about 32606.0663527510. The cubic root of 1063155563 is about 1020.6235975917.

The spelling of 1063155563 in words is "one billion, sixty-three million, one hundred fifty-five thousand, five hundred sixty-three".