115541550 has 72 divisors (see below), whose sum is σ = 313740336. Its totient is φ = 30481920.

The previous prime is 115541549. The next prime is 115541551. The reversal of 115541550 is 55145511.

115541550 is a `hidden beast` number, since 115 + 541 + 5 + 5 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (115541549) and next prime (115541551).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115541551) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 42327 + ... + 44973.

Almost surely, 2^115541550 is an apocalyptic number.

115541550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115541550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156870168).

115541550 is an abundant number, since it is smaller than the sum of its proper divisors (198198786).

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

115541550 is a wasteful number, since it uses less digits than its factorization.

115541550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762 (or 2754 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 115541550 is about 10749.0255372289. The cubic root of 115541550 is about 487.0565592835.

The spelling of 115541550 in words is "one hundred fifteen million, five hundred forty-one thousand, five hundred fifty".