115173505 has 16 divisors (see below), whose sum is σ = 141244560. Its totient is φ = 90125568.

The previous prime is 115173493. The next prime is 115173523. The reversal of 115173505 is 505371511.

It can be written as a sum of positive squares in 8 ways, for example, as 29073664 + 86099841 = 5392^2 + 9279^2 .

It is a cyclic number.

It is not a de Polignac number, because 115173505 - 2¹¹ = 115171457 is a prime.

It is an unprimeable number.

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, 162091 + ... + 162799.

It is an arithmetic number, because the mean of its divisors is an integer number (8827785).

It is the magic constant of a 613 × 613 magic square.

Almost surely, 2^115173505 is an apocalyptic number.

It is an amenable number.

115173505 is a deficient number, since it is larger than the sum of its proper divisors (26071055).

115173505 is an equidigital number, since it uses as much as digits as its factorization.

115173505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 2625, while the sum is 28.

The square root of 115173505 is about 10731.8919580846. The cubic root of 115173505 is about 486.5388540214.

The spelling of 115173505 in words is "one hundred fifteen million, one hundred seventy-three thousand, five hundred five".