1115253043 has 4 divisors (see below), whose sum is σ = 1120166280. Its totient is φ = 1110339808.

The previous prime is 1115252969. The next prime is 1115253059. The reversal of 1115253043 is 3403525111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1115253043 - 2¹⁷ = 1115121971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1115252999 and 1115253017.

It is not an unprimeable number, because it can be changed into a prime (1115253143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2456278 + ... + 2456731.

It is an arithmetic number, because the mean of its divisors is an integer number (280041570).

Almost surely, 2^1115253043 is an apocalyptic number.

1115253043 is a deficient number, since it is larger than the sum of its proper divisors (4913237).

1115253043 is an equidigital number, since it uses as much as digits as its factorization.

1115253043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4913236.

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

The square root of 1115253043 is about 33395.4045191850. The cubic root of 1115253043 is about 1037.0295673021.

Adding to 1115253043 its reverse (3403525111), we get a palindrome (4518778154).

The spelling of 1115253043 in words is "one billion, one hundred fifteen million, two hundred fifty-three thousand, forty-three".