115551506 has 24 divisors (see below), whose sum is σ = 204477696. Its totient is φ = 48821640.

The previous prime is 115551503. The next prime is 115551509. The reversal of 115551506 is 605155511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115551503) and next prime (115551509).

It is not an unprimeable number, because it can be changed into a prime (115551503) 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 11 ways as a sum of consecutive naturals, for example, 1346 + ... + 15261.

It is an arithmetic number, because the mean of its divisors is an integer number (8519904).

Almost surely, 2^115551506 is an apocalyptic number.

115551506 is a deficient number, since it is larger than the sum of its proper divisors (88926190).

115551506 is a wasteful number, since it uses less digits than its factorization.

115551506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16694 (or 16687 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 115551506 is about 10749.4886390005. The cubic root of 115551506 is about 487.0705484670.

The spelling of 115551506 in words is "one hundred fifteen million, five hundred fifty-one thousand, five hundred six".