115501000 has 64 divisors (see below), whose sum is σ = 284544000. Its totient is φ = 43761600.

The previous prime is 115500991. The next prime is 115501027. The reversal of 115501000 is 105511.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15961 + ... + 22039.

It is an arithmetic number, because the mean of its divisors is an integer number (4446000).

Almost surely, 2^115501000 is an apocalyptic number.

115501000 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 115501000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142272000).

115501000 is an abundant number, since it is smaller than the sum of its proper divisors (169043000).

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

115501000 is a wasteful number, since it uses less digits than its factorization.

115501000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119 (or 6105 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 115501000 is about 10747.1391542122. The cubic root of 115501000 is about 486.9995741430. Note that the first 3 decimals are identical.

Adding to 115501000 its reverse (105511), we get a palindrome (115606511).

The spelling of 115501000 in words is "one hundred fifteen million, five hundred one thousand".