101115505 has 4 divisors (see below), whose sum is σ = 121338612. Its totient is φ = 80892400.

The previous prime is 101115499. The next prime is 101115517. The reversal of 101115505 is 505511101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76195441 + 24920064 = 8729^2 + 4992^2 .

It is not a de Polignac number, because 101115505 - 2¹¹ = 101113457 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 10111546 + ... + 10111555.

It is an arithmetic number, because the mean of its divisors is an integer number (30334653).

Almost surely, 2^101115505 is an apocalyptic number.

It is an amenable number.

101115505 is a deficient number, since it is larger than the sum of its proper divisors (20223107).

101115505 is an equidigital number, since it uses as much as digits as its factorization.

101115505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20223106.

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 101115505 is about 10055.6205676229. The cubic root of 101115505 is about 465.8784105033.

Adding to 101115505 its reverse (505511101), we get a palindrome (606626606).

The spelling of 101115505 in words is "one hundred one million, one hundred fifteen thousand, five hundred five".