115155729 has 32 divisors (see below), whose sum is σ = 188711040. Its totient is φ = 68942016.

The previous prime is 115155721. The next prime is 115155737. The reversal of 115155729 is 927551511.

It is an interprime number because it is at equal distance from previous prime (115155721) and next prime (115155737).

It is not a de Polignac number, because 115155729 - 2³ = 115155721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115155693 and 115155702.

It is not an unprimeable number, because it can be changed into a prime (115155721) 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 31 ways as a sum of consecutive naturals, for example, 8554 + ... + 17420.

It is an arithmetic number, because the mean of its divisors is an integer number (5897220).

Almost surely, 2^115155729 is an apocalyptic number.

It is an amenable number.

115155729 is a deficient number, since it is larger than the sum of its proper divisors (73555311).

115155729 is a wasteful number, since it uses less digits than its factorization.

115155729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8926 (or 8920 counting only the distinct ones).

The product of its digits is 15750, while the sum is 36.

The square root of 115155729 is about 10731.0637403754. The cubic root of 115155729 is about 486.5138217606.

The spelling of 115155729 in words is "one hundred fifteen million, one hundred fifty-five thousand, seven hundred twenty-nine".