115211500 has 48 divisors (see below), whose sum is σ = 259773696. Its totient is φ = 44592000.

The previous prime is 115211489. The next prime is 115211521. The reversal of 115211500 is 5112511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11784 + ... + 19216.

It is an arithmetic number, because the mean of its divisors is an integer number (5411952).

Almost surely, 2^115211500 is an apocalyptic number.

115211500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115211500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129886848).

115211500 is an abundant number, since it is smaller than the sum of its proper divisors (144562196).

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

115211500 is a wasteful number, since it uses less digits than its factorization.

115211500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483 (or 7471 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 115211500 is about 10733.6620032494. The cubic root of 115211500 is about 486.5923501541.

The spelling of 115211500 in words is "one hundred fifteen million, two hundred eleven thousand, five hundred".