116081557 has 2 divisors, whose sum is σ = 116081558. Its totient is φ = 116081556.

The previous prime is 116081551. The next prime is 116081599. The reversal of 116081557 is 755180611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83887281 + 32194276 = 9159^2 + 5674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116081557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116081551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58040778 + 58040779.

It is an arithmetic number, because the mean of its divisors is an integer number (58040779).

Almost surely, 2^116081557 is an apocalyptic number.

It is an amenable number.

116081557 is a deficient number, since it is larger than the sum of its proper divisors (1).

116081557 is an equidigital number, since it uses as much as digits as its factorization.

116081557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 34.

The square root of 116081557 is about 10774.1151376807. The cubic root of 116081557 is about 487.8141662865.

The spelling of 116081557 in words is "one hundred sixteen million, eighty-one thousand, five hundred fifty-seven".