1121453503 has 2 divisors, whose sum is σ = 1121453504. Its totient is φ = 1121453502.

The previous prime is 1121453477. The next prime is 1121453539. The reversal of 1121453503 is 3053541211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121453503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121453563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560726751 + 560726752.

It is an arithmetic number, because the mean of its divisors is an integer number (560726752).

Almost surely, 2^1121453503 is an apocalyptic number.

1121453503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121453503 is an equidigital number, since it uses as much as digits as its factorization.

1121453503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1121453503 is about 33488.1098749989. The cubic root of 1121453503 is about 1038.9478705617.

Adding to 1121453503 its reverse (3053541211), we get a palindrome (4174994714).

The spelling of 1121453503 in words is "one billion, one hundred twenty-one million, four hundred fifty-three thousand, five hundred three".