115662961 has 2 divisors, whose sum is σ = 115662962. Its totient is φ = 115662960.

The previous prime is 115662947. The next prime is 115662973. The reversal of 115662961 is 169266511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115455025 + 207936 = 10745^2 + 456^2 .

It is a cyclic number.

It is not a de Polignac number, because 115662961 - 2¹¹ = 115660913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115662961.

It is not a weakly prime, because it can be changed into another prime (115662901) 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, 57831480 + 57831481.

It is an arithmetic number, because the mean of its divisors is an integer number (57831481).

Almost surely, 2^115662961 is an apocalyptic number.

It is an amenable number.

115662961 is a deficient number, since it is larger than the sum of its proper divisors (1).

115662961 is an equidigital number, since it uses as much as digits as its factorization.

115662961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 115662961 is about 10754.6715895931. The cubic root of 115662961 is about 487.2270991552.

The spelling of 115662961 in words is "one hundred fifteen million, six hundred sixty-two thousand, nine hundred sixty-one".