1143552161 has 2 divisors, whose sum is σ = 1143552162. Its totient is φ = 1143552160.

The previous prime is 1143552133. The next prime is 1143552167. The reversal of 1143552161 is 1612553411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 587771536 + 555780625 = 24244^2 + 23575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143552161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143552167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571776080 + 571776081.

It is an arithmetic number, because the mean of its divisors is an integer number (571776081).

Almost surely, 2^1143552161 is an apocalyptic number.

It is an amenable number.

1143552161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143552161 is an equidigital number, since it uses as much as digits as its factorization.

1143552161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 1143552161 is about 33816.4480837358. The cubic root of 1143552161 is about 1045.7278145223.

The spelling of 1143552161 in words is "one billion, one hundred forty-three million, five hundred fifty-two thousand, one hundred sixty-one".