1113543257 has 2 divisors, whose sum is σ = 1113543258. Its totient is φ = 1113543256.

The previous prime is 1113543251. The next prime is 1113543323. The reversal of 1113543257 is 7523453111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1037870656 + 75672601 = 32216^2 + 8699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113543257 - 2⁸ = 1113543001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113543251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556771628 + 556771629.

It is an arithmetic number, because the mean of its divisors is an integer number (556771629).

Almost surely, 2^1113543257 is an apocalyptic number.

It is an amenable number.

1113543257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113543257 is an equidigital number, since it uses as much as digits as its factorization.

1113543257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 1113543257 is about 33369.7955792360. The cubic root of 1113543257 is about 1036.4993421879.

Adding to 1113543257 its reverse (7523453111), we get a palindrome (8636996368).

The spelling of 1113543257 in words is "one billion, one hundred thirteen million, five hundred forty-three thousand, two hundred fifty-seven".