1163305553 has 2 divisors, whose sum is σ = 1163305554. Its totient is φ = 1163305552.

The previous prime is 1163305547. The next prime is 1163305603. The reversal of 1163305553 is 3555033611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1105363009 + 57942544 = 33247^2 + 7612^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163305553 - 2¹⁶ = 1163240017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1163305513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581652776 + 581652777.

It is an arithmetic number, because the mean of its divisors is an integer number (581652777).

Almost surely, 2^1163305553 is an apocalyptic number.

It is an amenable number.

1163305553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163305553 is an equidigital number, since it uses as much as digits as its factorization.

1163305553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 32.

The square root of 1163305553 is about 34107.2653990319. The cubic root of 1163305553 is about 1051.7146747133.

The spelling of 1163305553 in words is "one billion, one hundred sixty-three million, three hundred five thousand, five hundred fifty-three".