1115324251 has 2 divisors, whose sum is σ = 1115324252. Its totient is φ = 1115324250.

The previous prime is 1115324227. The next prime is 1115324279. The reversal of 1115324251 is 1524235111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1115324251 - 2⁷ = 1115324123 is a prime.

It is a super-2 number, since 2×1115324251² = 2487896369737422002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1115324201) 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, 557662125 + 557662126.

It is an arithmetic number, because the mean of its divisors is an integer number (557662126).

Almost surely, 2^1115324251 is an apocalyptic number.

1115324251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115324251 is an equidigital number, since it uses as much as digits as its factorization.

1115324251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 25.

The square root of 1115324251 is about 33396.4706368802. The cubic root of 1115324251 is about 1037.0516379973.

Adding to 1115324251 its reverse (1524235111), we get a palindrome (2639559362).

The spelling of 1115324251 in words is "one billion, one hundred fifteen million, three hundred twenty-four thousand, two hundred fifty-one".