115507057 has 4 divisors (see below), whose sum is σ = 115647220. Its totient is φ = 115366896.

The previous prime is 115507043. The next prime is 115507069. The reversal of 115507057 is 750705511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750705511 = 1307 ⋅574373.

It can be written as a sum of positive squares in 2 ways, for example, as 36012001 + 79495056 = 6001^2 + 8916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115507057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115507157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68838 + ... + 70495.

It is an arithmetic number, because the mean of its divisors is an integer number (28911805).

Almost surely, 2^115507057 is an apocalyptic number.

It is an amenable number.

115507057 is a deficient number, since it is larger than the sum of its proper divisors (140163).

115507057 is an equidigital number, since it uses as much as digits as its factorization.

115507057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140162.

The product of its (nonzero) digits is 6125, while the sum is 31.

The square root of 115507057 is about 10747.4209464411. The cubic root of 115507057 is about 487.0080869260.

The spelling of 115507057 in words is "one hundred fifteen million, five hundred seven thousand, fifty-seven".