115555550 has 24 divisors (see below), whose sum is σ = 234473832. Its totient is φ = 42020000.

The previous prime is 115555547. The next prime is 115555603. The reversal of 115555550 is 55555511.

It is a congruent number.

It is an unprimeable number.

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, 104501 + ... + 105600.

It is an arithmetic number, because the mean of its divisors is an integer number (9769743).

Almost surely, 2^115555550 is an apocalyptic number.

115555550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115555550 is an abundant number, since it is smaller than the sum of its proper divisors (118918282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115555550 is a wasteful number, since it uses less digits than its factorization.

115555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210124 (or 210119 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 32.

The square root of 115555550 is about 10749.6767393257. The cubic root of 115555550 is about 487.0762304651.

It can be divided in two parts, 1 and 15555550, that added together give a palindrome (15555551).

The spelling of 115555550 in words is "one hundred fifteen million, five hundred fifty-five thousand, five hundred fifty".