115920505 has 8 divisors (see below), whose sum is σ = 139162824. Its totient is φ = 92697600.

The previous prime is 115920499. The next prime is 115920517. The reversal of 115920505 is 505029511.

It can be written as a sum of positive squares in 4 ways, for example, as 52765696 + 63154809 = 7264^2 + 7947^2 .

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

It is not a de Polignac number, because 115920505 - 2⁵ = 115920473 is a prime.

It is a Duffinian 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, 18585 + ... + 24025.

It is an arithmetic number, because the mean of its divisors is an integer number (17395353).

Almost surely, 2^115920505 is an apocalyptic number.

It is an amenable number.

115920505 is a deficient number, since it is larger than the sum of its proper divisors (23242319).

115920505 is an equidigital number, since it uses as much as digits as its factorization.

115920505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9707.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 115920505 is about 10766.6385190551. The cubic root of 115920505 is about 487.5884634552.

The spelling of 115920505 in words is "one hundred fifteen million, nine hundred twenty thousand, five hundred five".