115648961 has 4 divisors (see below), whose sum is σ = 116493252. Its totient is φ = 114804672.

The previous prime is 115648957. The next prime is 115648997. The reversal of 115648961 is 169846511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169846511 = 6343 ⋅26777.

It can be written as a sum of positive squares in 2 ways, for example, as 52287361 + 63361600 = 7231^2 + 7960^2 .

It is a cyclic number.

It is not a de Polignac number, because 115648961 - 2² = 115648957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115648921) 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 in 3 ways as a sum of consecutive naturals, for example, 421940 + ... + 422213.

It is an arithmetic number, because the mean of its divisors is an integer number (29123313).

Almost surely, 2^115648961 is an apocalyptic number.

It is an amenable number.

115648961 is a deficient number, since it is larger than the sum of its proper divisors (844291).

115648961 is an equidigital number, since it uses as much as digits as its factorization.

115648961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844290.

The product of its digits is 51840, while the sum is 41.

The square root of 115648961 is about 10754.0206899559. The cubic root of 115648961 is about 487.2074401547.

The spelling of 115648961 in words is "one hundred fifteen million, six hundred forty-eight thousand, nine hundred sixty-one".