115572257 has 2 divisors, whose sum is σ = 115572258. Its totient is φ = 115572256.

The previous prime is 115572251. The next prime is 115572311. The reversal of 115572257 is 752275511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113188321 + 2383936 = 10639^2 + 1544^2 .

It is a cyclic number.

It is not a de Polignac number, because 115572257 - 2¹⁴ = 115555873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115572251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57786128 + 57786129.

It is an arithmetic number, because the mean of its divisors is an integer number (57786129).

Almost surely, 2^115572257 is an apocalyptic number.

It is an amenable number.

115572257 is a deficient number, since it is larger than the sum of its proper divisors (1).

115572257 is an equidigital number, since it uses as much as digits as its factorization.

115572257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24500, while the sum is 35.

The square root of 115572257 is about 10750.4538043750. The cubic root of 115572257 is about 487.0997031310.

The spelling of 115572257 in words is "one hundred fifteen million, five hundred seventy-two thousand, two hundred fifty-seven".