115172005 has 8 divisors (see below), whose sum is σ = 148837752. Its totient is φ = 85050048.

The previous prime is 115171999. The next prime is 115172041. The reversal of 115172005 is 500271511.

It can be written as a sum of positive squares in 4 ways, for example, as 617796 + 114554209 = 786^2 + 10703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115172005 - 2³ = 115171997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885874 + ... + 886003.

It is an arithmetic number, because the mean of its divisors is an integer number (18604719).

Almost surely, 2^115172005 is an apocalyptic number.

It is an amenable number.

115172005 is a deficient number, since it is larger than the sum of its proper divisors (33665747).

115172005 is a wasteful number, since it uses less digits than its factorization.

115172005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771895.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 115172005 is about 10731.8220726958. The cubic root of 115172005 is about 486.5367418127.

The spelling of 115172005 in words is "one hundred fifteen million, one hundred seventy-two thousand, five".