115173729 has 18 divisors (see below), whose sum is σ = 182862498. Its totient is φ = 69801600.

The previous prime is 115173727. The next prime is 115173731. The reversal of 115173729 is 927371511.

It is an interprime number because it is at equal distance from previous prime (115173727) and next prime (115173731).

It can be written as a sum of positive squares in only one way, i.e., 64834704 + 50339025 = 8052^2 + 7095^2 .

It is not a de Polignac number, because 115173729 - 2¹ = 115173727 is a prime.

It is a super-3 number, since 3×115173729³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115173693 and 115173702.

It is not an unprimeable number, because it can be changed into a prime (115173727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51792 + ... + 53969.

Almost surely, 2^115173729 is an apocalyptic number.

It is an amenable number.

115173729 is a deficient number, since it is larger than the sum of its proper divisors (67688769).

115173729 is a wasteful number, since it uses less digits than its factorization.

115173729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105789 (or 105775 counting only the distinct ones).

The product of its digits is 13230, while the sum is 36.

The square root of 115173729 is about 10731.9023942636. The cubic root of 115173729 is about 486.5391694430.

The spelling of 115173729 in words is "one hundred fifteen million, one hundred seventy-three thousand, seven hundred twenty-nine".