115199550 has 48 divisors (see below), whose sum is σ = 317442480. Its totient is φ = 30719520.

The previous prime is 115199477. The next prime is 115199551. The reversal of 115199550 is 55991511.

115199550 is a `hidden beast` number, since 1 + 1 + 519 + 95 + 50 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115199551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41317 + ... + 44016.

It is an arithmetic number, because the mean of its divisors is an integer number (6613385).

Almost surely, 2^115199550 is an apocalyptic number.

115199550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115199550 is an abundant number, since it is smaller than the sum of its proper divisors (202242930).

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

115199550 is a wasteful number, since it uses less digits than its factorization.

115199550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85354 (or 85343 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 36.

The square root of 115199550 is about 10733.1053288412. The cubic root of 115199550 is about 486.5755260823.

The spelling of 115199550 in words is "one hundred fifteen million, one hundred ninety-nine thousand, five hundred fifty".