1255543433 has 2 divisors, whose sum is σ = 1255543434. Its totient is φ = 1255543432.

The previous prime is 1255543409. The next prime is 1255543439. The reversal of 1255543433 is 3343455521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164379129 + 91164304 = 34123^2 + 9548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255543433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1255543393 and 1255543402.

It is not a weakly prime, because it can be changed into another prime (1255543439) 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, 627771716 + 627771717.

It is an arithmetic number, because the mean of its divisors is an integer number (627771717).

Almost surely, 2^1255543433 is an apocalyptic number.

It is an amenable number.

1255543433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255543433 is an equidigital number, since it uses as much as digits as its factorization.

1255543433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 35.

The square root of 1255543433 is about 35433.6483162544. The cubic root of 1255543433 is about 1078.8073920897.

Adding to 1255543433 its reverse (3343455521), we get a palindrome (4598998954).

The spelling of 1255543433 in words is "one billion, two hundred fifty-five million, five hundred forty-three thousand, four hundred thirty-three".