1189553 has 2 divisors, whose sum is σ = 1189554. Its totient is φ = 1189552.

The previous prime is 1189483. The next prime is 1189567. The reversal of 1189553 is 3559811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 889249 + 300304 = 943^2 + 548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189553 - 2¹⁰ = 1188529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1189453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594776 + 594777.

It is an arithmetic number, because the mean of its divisors is an integer number (594777).

2^1189553 is an apocalyptic number.

It is an amenable number.

1189553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189553 is an equidigital number, since it uses as much as digits as its factorization.

1189553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 32.

The square root of 1189553 is about 1090.6663101059. Note that the first 3 decimals coincide. The cubic root of 1189553 is about 105.9565800569.

The spelling of 1189553 in words is "one million, one hundred eighty-nine thousand, five hundred fifty-three".