1143330553 has 2 divisors, whose sum is σ = 1143330554. Its totient is φ = 1143330552.

The previous prime is 1143330541. The next prime is 1143330571. The reversal of 1143330553 is 3550333411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 990486784 + 152843769 = 31472^2 + 12363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143330553 - 2⁵ = 1143330521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143330533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571665276 + 571665277.

It is an arithmetic number, because the mean of its divisors is an integer number (571665277).

Almost surely, 2^1143330553 is an apocalyptic number.

It is an amenable number.

1143330553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143330553 is an equidigital number, since it uses as much as digits as its factorization.

1143330553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 1143330553 is about 33813.1712946301. The cubic root of 1143330553 is about 1045.6602599239.

Adding to 1143330553 its reverse (3550333411), we get a palindrome (4693663964).

The spelling of 1143330553 in words is "one billion, one hundred forty-three million, three hundred thirty thousand, five hundred fifty-three".