115501520 has 40 divisors (see below), whose sum is σ = 269982720. Its totient is φ = 45952640.

The previous prime is 115501433. The next prime is 115501541. The reversal of 115501520 is 25105511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×115501520² = 26681202244620800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 115501492 and 115501501.

It is a congruent number.

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, 11501 + ... + 19059.

It is an arithmetic number, because the mean of its divisors is an integer number (6749568).

Almost surely, 2^115501520 is an apocalyptic number.

115501520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115501520 is an abundant number, since it is smaller than the sum of its proper divisors (154481200).

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

115501520 is a wasteful number, since it uses less digits than its factorization.

115501520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7763 (or 7757 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 115501520 is about 10747.1633466697. The cubic root of 115501520 is about 487.0003049863. Note that the first 3 decimals are identical.

The spelling of 115501520 in words is "one hundred fifteen million, five hundred one thousand, five hundred twenty".