115243057 has 2 divisors, whose sum is σ = 115243058. Its totient is φ = 115243056.

The previous prime is 115243043. The next prime is 115243099. The reversal of 115243057 is 750342511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105657841 + 9585216 = 10279^2 + 3096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115243057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115243657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57621528 + 57621529.

It is an arithmetic number, because the mean of its divisors is an integer number (57621529).

Almost surely, 2^115243057 is an apocalyptic number.

It is an amenable number.

115243057 is a deficient number, since it is larger than the sum of its proper divisors (1).

115243057 is an equidigital number, since it uses as much as digits as its factorization.

115243057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 115243057 is about 10735.1319041733. The cubic root of 115243057 is about 486.6367727827.

Adding to 115243057 its reverse (750342511), we get a palindrome (865585568).

The spelling of 115243057 in words is "one hundred fifteen million, two hundred forty-three thousand, fifty-seven".