1158017557 has 2 divisors, whose sum is σ = 1158017558. Its totient is φ = 1158017556.

The previous prime is 1158017551. The next prime is 1158017561. The reversal of 1158017557 is 7557108511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 627452401 + 530565156 = 25049^2 + 23034^2 .

It is an emirp because it is prime and its reverse (7557108511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1158017557 - 2⁷ = 1158017429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158017551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579008778 + 579008779.

It is an arithmetic number, because the mean of its divisors is an integer number (579008779).

Almost surely, 2^1158017557 is an apocalyptic number.

It is an amenable number.

1158017557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158017557 is an equidigital number, since it uses as much as digits as its factorization.

1158017557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49000, while the sum is 40.

The square root of 1158017557 is about 34029.6570214864. The cubic root of 1158017557 is about 1050.1186735104.

The spelling of 1158017557 in words is "one billion, one hundred fifty-eight million, seventeen thousand, five hundred fifty-seven".