115751257 has 2 divisors, whose sum is σ = 115751258. Its totient is φ = 115751256.

The previous prime is 115751239. The next prime is 115751263. The reversal of 115751257 is 752157511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111175936 + 4575321 = 10544^2 + 2139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115751257 is a prime.

It is not a weakly prime, because it can be changed into another prime (115751357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57875628 + 57875629.

It is an arithmetic number, because the mean of its divisors is an integer number (57875629).

Almost surely, 2^115751257 is an apocalyptic number.

It is an amenable number.

115751257 is a deficient number, since it is larger than the sum of its proper divisors (1).

115751257 is an equidigital number, since it uses as much as digits as its factorization.

115751257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12250, while the sum is 34.

The square root of 115751257 is about 10758.7758132605. The cubic root of 115751257 is about 487.3510491249.

The spelling of 115751257 in words is "one hundred fifteen million, seven hundred fifty-one thousand, two hundred fifty-seven".