1117481557 has 2 divisors, whose sum is σ = 1117481558. Its totient is φ = 1117481556.

The previous prime is 1117481513. The next prime is 1117481633. The reversal of 1117481557 is 7551847111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005777796 + 111703761 = 31714^2 + 10569^2 .

It is an emirp because it is prime and its reverse (7551847111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1117481557 - 2¹⁵ = 1117448789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117481507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558740778 + 558740779.

It is an arithmetic number, because the mean of its divisors is an integer number (558740779).

Almost surely, 2^1117481557 is an apocalyptic number.

It is an amenable number.

1117481557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117481557 is an equidigital number, since it uses as much as digits as its factorization.

1117481557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39200, while the sum is 40.

The square root of 1117481557 is about 33428.7534466962. The cubic root of 1117481557 is about 1037.7198433240.

The spelling of 1117481557 in words is "one billion, one hundred seventeen million, four hundred eighty-one thousand, five hundred fifty-seven".