115655121 has 16 divisors (see below), whose sum is σ = 173459520. Its totient is φ = 77101956.

The previous prime is 115655117. The next prime is 115655153. The reversal of 115655121 is 121556511.

115655121 is a `hidden beast` number, since 1 + 1 + 5 + 655 + 1 + 2 + 1 = 666.

It is not a de Polignac number, because 115655121 - 2² = 115655117 is a prime.

It is a super-2 number, since 2×115655121² = 26752214027049282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115655101) 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 15 ways as a sum of consecutive naturals, for example, 24255 + ... + 28628.

It is an arithmetic number, because the mean of its divisors is an integer number (10841220).

Almost surely, 2^115655121 is an apocalyptic number.

It is an amenable number.

115655121 is a deficient number, since it is larger than the sum of its proper divisors (57804399).

115655121 is an frugal number, since it uses more digits than its factorization.

115655121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52904 (or 52886 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The square root of 115655121 is about 10754.3070906498. The cubic root of 115655121 is about 487.2160903104.

The spelling of 115655121 in words is "one hundred fifteen million, six hundred fifty-five thousand, one hundred twenty-one".