115105521 has 12 divisors (see below), whose sum is σ = 163034192. Its totient is φ = 72222528.

The previous prime is 115105517. The next prime is 115105541. The reversal of 115105521 is 125501511.

It is not a de Polignac number, because 115105521 - 2² = 115105517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115105541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65515 + ... + 67248.

Almost surely, 2^115105521 is an apocalyptic number.

It is an amenable number.

115105521 is a deficient number, since it is larger than the sum of its proper divisors (47928671).

115105521 is a wasteful number, since it uses less digits than its factorization.

115105521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132800 (or 132783 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 115105521 is about 10728.7241086720. The cubic root of 115105521 is about 486.4431046627.

The spelling of 115105521 in words is "one hundred fifteen million, one hundred five thousand, five hundred twenty-one".