1155051203 has 2 divisors, whose sum is σ = 1155051204. Its totient is φ = 1155051202.

The previous prime is 1155051151. The next prime is 1155051239. The reversal of 1155051203 is 3021505511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155051203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1155051263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577525601 + 577525602.

It is an arithmetic number, because the mean of its divisors is an integer number (577525602).

Almost surely, 2^1155051203 is an apocalyptic number.

1155051203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155051203 is an equidigital number, since it uses as much as digits as its factorization.

1155051203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1155051203 is about 33986.0442387754. The cubic root of 1155051203 is about 1049.2212526570.

Adding to 1155051203 its reverse (3021505511), we get a palindrome (4176556714).

The spelling of 1155051203 in words is "one billion, one hundred fifty-five million, fifty-one thousand, two hundred three".