115550111 has 8 divisors (see below), whose sum is σ = 118286784. Its totient is φ = 112825120.

The previous prime is 115550089. The next prime is 115550129. The reversal of 115550111 is 111055511.

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 115550111 - 2¹⁰ = 115549087 is a prime.

It is a super-2 number, since 2×115550111² = 26703656304224642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115550311) 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 7 ways as a sum of consecutive naturals, for example, 19001 + ... + 24333.

It is an arithmetic number, because the mean of its divisors is an integer number (14785848).

Almost surely, 2^115550111 is an apocalyptic number.

115550111 is a deficient number, since it is larger than the sum of its proper divisors (2736673).

115550111 is an equidigital number, since it uses as much as digits as its factorization.

115550111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841.

The product of its (nonzero) digits is 125, while the sum is 20.

The square root of 115550111 is about 10749.4237519971. The cubic root of 115550111 is about 487.0685883998.

The spelling of 115550111 in words is "one hundred fifteen million, five hundred fifty thousand, one hundred eleven".