115557061 has 2 divisors, whose sum is σ = 115557062. Its totient is φ = 115557060.

The previous prime is 115557053. The next prime is 115557103. The reversal of 115557061 is 160755511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100300225 + 15256836 = 10015^2 + 3906^2 .

It is a cyclic number.

It is not a de Polignac number, because 115557061 - 2³ = 115557053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115557461) 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, 57778530 + 57778531.

It is an arithmetic number, because the mean of its divisors is an integer number (57778531).

Almost surely, 2^115557061 is an apocalyptic number.

It is an amenable number.

115557061 is a deficient number, since it is larger than the sum of its proper divisors (1).

115557061 is an equidigital number, since it uses as much as digits as its factorization.

115557061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 115557061 is about 10749.7470202791. The cubic root of 115557061 is about 487.0783534527.

The spelling of 115557061 in words is "one hundred fifteen million, five hundred fifty-seven thousand, sixty-one".