100115520 has 56 divisors (see below), whose sum is σ = 317869824. Its totient is φ = 26697216.

The previous prime is 100115501. The next prime is 100115531. The reversal of 100115520 is 25511001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 100115520.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51184 + ... + 53103.

Almost surely, 2^100115520 is an apocalyptic number.

100115520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100115520 is an abundant number, since it is smaller than the sum of its proper divisors (217754304).

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

100115520 is a wasteful number, since it uses less digits than its factorization.

100115520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104307 (or 104297 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 100115520 is about 10005.7743328540. The cubic root of 100115520 is about 464.3375466957.

Adding to 100115520 its reverse (25511001), we get a palindrome (125626521).

The spelling of 100115520 in words is "one hundred million, one hundred fifteen thousand, five hundred twenty".