1205501333 has 2 divisors, whose sum is σ = 1205501334. Its totient is φ = 1205501332.

The previous prime is 1205501293. The next prime is 1205501389. The reversal of 1205501333 is 3331055021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1169776804 + 35724529 = 34202^2 + 5977^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205501333 - 2¹⁴ = 1205484949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1205501299 and 1205501308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205507333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602750666 + 602750667.

It is an arithmetic number, because the mean of its divisors is an integer number (602750667).

Almost surely, 2^1205501333 is an apocalyptic number.

It is an amenable number.

1205501333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205501333 is an equidigital number, since it uses as much as digits as its factorization.

1205501333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 1205501333 is about 34720.3302547657. The cubic root of 1205501333 is about 1064.2799935508.

Adding to 1205501333 its reverse (3331055021), we get a palindrome (4536556354).

The spelling of 1205501333 in words is "one billion, two hundred five million, five hundred one thousand, three hundred thirty-three".